Merge branch 'master' into parallel-nix-copy

29 files changed, 776 insertions, 488 deletions

diff --git a/tests/ca-shell.nix b/tests/ca-shell.nix
index ad2ab6aff..36e1d1526 100644
--- a/tests/ca-shell.nix
+++ b/tests/ca-shell.nix
@@ -1 +1 @@
-{ ... }@args: import ./shell.nix (args // { contentAddressed = true; })
+{ inNixShell ? false, ... }@args: import ./shell.nix (args // { contentAddressed = true; })
diff --git a/tests/ca/content-addressed.nix b/tests/ca/content-addressed.nix
index 31c144ae0..81bc4bf5c 100644
--- a/tests/ca/content-addressed.nix
+++ b/tests/ca/content-addressed.nix
@@ -75,7 +75,7 @@ rec {
     buildCommand = ''
       mkdir -p $out/bin
       echo ${rootCA} # Just to make it depend on it
-      echo "" > $out/bin/${name}
+      echo "#! ${shell}" > $out/bin/${name}
       chmod +x $out/bin/${name}
     '';
   };
diff --git a/tests/common.sh.in b/tests/common.sh.in
index 6cb579e0d..79da10199 100644
--- a/tests/common.sh.in
+++ b/tests/common.sh.in
@@ -50,6 +50,8 @@ export busybox="@sandbox_shell@"
 export version=@PACKAGE_VERSION@
 export system=@system@
 
+export BUILD_SHARED_LIBS=@BUILD_SHARED_LIBS@
+
 export IMPURE_VAR1=foo
 export IMPURE_VAR2=bar
 
@@ -117,11 +119,11 @@ killDaemon() {
 }
 
 restartDaemon() {
-  [[ -z "${pidDaemon:-}" ]] && return 0
+    [[ -z "${pidDaemon:-}" ]] && return 0
 
-  killDaemon
-  unset NIX_REMOTE
-  startDaemon
+    killDaemon
+    unset NIX_REMOTE
+    startDaemon
 }
 
 if [[ $(uname) == Linux ]] && [[ -L /proc/self/ns/user ]] && unshare --user true; then
@@ -188,4 +190,15 @@ if [[ -n "${NIX_DAEMON_PACKAGE:-}" ]]; then
     startDaemon
 fi
 
+onError() {
+    set +x
+    echo "$0: test failed at:" >&2
+    for ((i = 1; i < 16; i++)); do
+        if [[ -z ${BASH_SOURCE[i]} ]]; then break; fi
+        echo "  ${FUNCNAME[i]} in ${BASH_SOURCE[i]}:${BASH_LINENO[i-1]}" >&2
+    done
+}
+
+trap onError ERR
+
 fi # COMMON_SH_SOURCED
diff --git a/tests/completions.sh b/tests/completions.sh
new file mode 100644
index 000000000..522aa1c86
--- /dev/null
+++ b/tests/completions.sh
@@ -0,0 +1,62 @@
+source common.sh
+
+cd "$TEST_ROOT"
+
+mkdir -p dep
+cat <<EOF > dep/flake.nix
+{
+    outputs = i: { };
+}
+EOF
+mkdir -p foo
+cat <<EOF > foo/flake.nix
+{
+    inputs.a.url = "path:$(realpath dep)";
+
+    outputs = i: {
+        sampleOutput = 1;
+    };
+}
+EOF
+mkdir -p bar
+cat <<EOF > bar/flake.nix
+{
+    inputs.b.url = "path:$(realpath dep)";
+
+    outputs = i: {
+        sampleOutput = 1;
+    };
+}
+EOF
+
+# Test the completion of a subcommand
+[[ "$(NIX_GET_COMPLETIONS=1 nix buil)" == $'normal\nbuild\t' ]]
+[[ "$(NIX_GET_COMPLETIONS=2 nix flake metad)" == $'normal\nmetadata\t' ]]
+
+# Filename completion
+[[ "$(NIX_GET_COMPLETIONS=2 nix build ./f)" == $'filenames\n./foo\t' ]]
+[[ "$(NIX_GET_COMPLETIONS=2 nix build ./nonexistent)" == $'filenames' ]]
+
+# Input override completion
+[[ "$(NIX_GET_COMPLETIONS=4 nix build ./foo --override-input '')" == $'normal\na\t' ]]
+[[ "$(NIX_GET_COMPLETIONS=5 nix flake show ./foo --override-input '')" == $'normal\na\t' ]]
+## With multiple input flakes
+[[ "$(NIX_GET_COMPLETIONS=5 nix build ./foo ./bar --override-input '')" == $'normal\na\t\nb\t' ]]
+## With tilde expansion
+[[ "$(HOME=$PWD NIX_GET_COMPLETIONS=4 nix build '~/foo' --override-input '')" == $'normal\na\t' ]]
+## Out of order
+[[ "$(NIX_GET_COMPLETIONS=3 nix build --update-input '' ./foo)" == $'normal\na\t' ]]
+[[ "$(NIX_GET_COMPLETIONS=4 nix build ./foo --update-input '' ./bar)" == $'normal\na\t\nb\t' ]]
+
+# Cli flag completion
+NIX_GET_COMPLETIONS=2 nix build --log-form | grep -- "--log-format"
+
+# Config option completion
+## With `--option`
+NIX_GET_COMPLETIONS=3 nix build --option allow-import-from | grep -- "allow-import-from-derivation"
+## As a cli flag – not working atm
+# NIX_GET_COMPLETIONS=2 nix build --allow-import-from | grep -- "allow-import-from-derivation"
+
+# Attr path completions
+[[ "$(NIX_GET_COMPLETIONS=2 nix eval ./foo\#sam)" == $'attrs\n./foo#sampleOutput\t' ]]
+[[ "$(NIX_GET_COMPLETIONS=4 nix eval --file ./foo/flake.nix outp)" == $'attrs\noutputs\t' ]]
diff --git a/tests/flake-bundler.sh b/tests/flakes/bundle.sh
index 9496b8f92..67bbb05ac 100644
--- a/tests/flake-bundler.sh
+++ b/tests/flakes/bundle.sh
@@ -1,9 +1,6 @@
 source common.sh
 
-clearStore
-rm -rf $TEST_HOME/.cache $TEST_HOME/.config $TEST_HOME/.local
-
-cp ./simple.nix ./simple.builder.sh ./config.nix $TEST_HOME
+cp ../simple.nix ../simple.builder.sh ../config.nix $TEST_HOME
 
 cd $TEST_HOME
 
@@ -25,6 +22,7 @@ cat <<EOF > flake.nix
     };
 }
 EOF
+
 nix build .#
 nix bundle --bundler .# .#
 nix bundle --bundler .#bundlers.$system.default .#packages.$system.default
@@ -32,6 +30,3 @@ nix bundle --bundler .#bundlers.$system.simple  .#packages.$system.default
 
 nix bundle --bundler .#bundlers.$system.default .#apps.$system.default
 nix bundle --bundler .#bundlers.$system.simple  .#apps.$system.default
-
-clearStore
-
diff --git a/tests/flakes/check.sh b/tests/flakes/check.sh
new file mode 100644
index 000000000..f572aa75c
--- /dev/null
+++ b/tests/flakes/check.sh
@@ -0,0 +1,89 @@
+source common.sh
+
+flakeDir=$TEST_ROOT/flake3
+mkdir -p $flakeDir
+
+cat > $flakeDir/flake.nix <<EOF
+{
+  outputs = { self }: {
+    overlay = final: prev: {
+    };
+  };
+}
+EOF
+
+nix flake check $flakeDir
+
+cat > $flakeDir/flake.nix <<EOF
+{
+  outputs = { self }: {
+    overlay = finalll: prev: {
+    };
+  };
+}
+EOF
+
+(! nix flake check $flakeDir)
+
+cat > $flakeDir/flake.nix <<EOF
+{
+  outputs = { self }: {
+    nixosModules.foo = {
+      a.b.c = 123;
+      foo = true;
+    };
+  };
+}
+EOF
+
+nix flake check $flakeDir
+
+cat > $flakeDir/flake.nix <<EOF
+{
+  outputs = { self }: {
+    nixosModules.foo = {
+      a.b.c = 123;
+      foo = assert false; true;
+    };
+  };
+}
+EOF
+
+(! nix flake check $flakeDir)
+
+cat > $flakeDir/flake.nix <<EOF
+{
+  outputs = { self }: {
+    nixosModule = { config, pkgs, ... }: {
+      a.b.c = 123;
+    };
+  };
+}
+EOF
+
+nix flake check $flakeDir
+
+cat > $flakeDir/flake.nix <<EOF
+{
+  outputs = { self }: {
+    nixosModule = { config, pkgs }: {
+      a.b.c = 123;
+    };
+  };
+}
+EOF
+
+(! nix flake check $flakeDir)
+
+cat > $flakeDir/flake.nix <<EOF
+{
+  outputs = { self }: {
+    packages.system-1.default = "foo";
+    packages.system-2.default = "bar";
+  };
+}
+EOF
+
+checkRes=$(nix flake check --keep-going $flakeDir 2>&1 && fail "nix flake check should have failed" || true)
+echo "$checkRes" | grep -q "packages.system-1.default"
+echo "$checkRes" | grep -q "packages.system-2.default"
diff --git a/tests/flakes/circular.sh b/tests/flakes/circular.sh
new file mode 100644
index 000000000..09cd02edf
--- /dev/null
+++ b/tests/flakes/circular.sh
@@ -0,0 +1,49 @@
+# Test circular flake dependencies.
+source ./common.sh
+
+requireGit
+
+flakeA=$TEST_ROOT/flakeA
+flakeB=$TEST_ROOT/flakeB
+
+createGitRepo $flakeA
+createGitRepo $flakeB
+
+cat > $flakeA/flake.nix <<EOF
+{
+  inputs.b.url = git+file://$flakeB;
+  inputs.b.inputs.a.follows = "/";
+
+  outputs = { self, b }: {
+    foo = 123 + b.bar;
+    xyzzy = 1000;
+  };
+}
+EOF
+
+git -C $flakeA add flake.nix
+
+cat > $flakeB/flake.nix <<EOF
+{
+  inputs.a.url = git+file://$flakeA;
+
+  outputs = { self, a }: {
+    bar = 456 + a.xyzzy;
+  };
+}
+EOF
+
+git -C $flakeB add flake.nix
+git -C $flakeB commit -a -m 'Foo'
+
+[[ $(nix eval $flakeA#foo) = 1579 ]]
+[[ $(nix eval $flakeA#foo) = 1579 ]]
+
+sed -i $flakeB/flake.nix -e 's/456/789/'
+git -C $flakeB commit -a -m 'Foo'
+
+[[ $(nix eval --update-input b $flakeA#foo) = 1912 ]]
+
+# Test list-inputs with circular dependencies
+nix flake metadata $flakeA
+
diff --git a/tests/flakes/common.sh b/tests/flakes/common.sh
new file mode 100644
index 000000000..c333733c2
--- /dev/null
+++ b/tests/flakes/common.sh
@@ -0,0 +1,73 @@
+source ../common.sh
+
+registry=$TEST_ROOT/registry.json
+
+requireGit() {
+    if [[ -z $(type -p git) ]]; then
+        echo "Git not installed; skipping flake tests"
+        exit 99
+    fi
+}
+
+writeSimpleFlake() {
+    local flakeDir="$1"
+    cat > $flakeDir/flake.nix <<EOF
+{
+  description = "Bla bla";
+
+  outputs = inputs: rec {
+    packages.$system = rec {
+      foo = import ./simple.nix;
+      default = foo;
+    };
+
+    # To test "nix flake init".
+    legacyPackages.x86_64-linux.hello = import ./simple.nix;
+  };
+}
+EOF
+
+    cp ../simple.nix ../simple.builder.sh ../config.nix $flakeDir/
+}
+
+createSimpleGitFlake() {
+    local flakeDir="$1"
+    writeSimpleFlake $flakeDir
+    git -C $flakeDir add flake.nix simple.nix simple.builder.sh config.nix
+    git -C $flakeDir commit -m 'Initial'
+}
+
+writeDependentFlake() {
+    local flakeDir="$1"
+    cat > $flakeDir/flake.nix <<EOF
+{
+  outputs = { self, flake1 }: {
+    packages.$system.default = flake1.packages.$system.default;
+    expr = assert builtins.pathExists ./flake.lock; 123;
+  };
+}
+EOF
+}
+
+writeTrivialFlake() {
+    local flakeDir="$1"
+    cat > $flakeDir/flake.nix <<EOF
+{
+  outputs = { self }: {
+    expr = 123;
+  };
+}
+EOF
+}
+
+createGitRepo() {
+    local repo="$1"
+    local extraArgs="$2"
+
+    rm -rf $repo $repo.tmp
+    mkdir -p $repo
+
+    git -C $repo init $extraArgs
+    git -C $repo config user.email "foobar@example.com"
+    git -C $repo config user.name "Foobar"
+}
diff --git a/tests/flake-local-settings.sh b/tests/flakes/config.sh
index e92c16f87..d1941a6be 100644
--- a/tests/flake-local-settings.sh
+++ b/tests/flakes/config.sh
@@ -1,9 +1,6 @@
 source common.sh
 
-clearStore
-rm -rf $TEST_HOME/.cache $TEST_HOME/.config $TEST_HOME/.local
-
-cp ./simple.nix ./simple.builder.sh ./config.nix $TEST_HOME
+cp ../simple.nix ../simple.builder.sh ../config.nix $TEST_HOME
 
 cd $TEST_HOME
 
diff --git a/tests/flakes.sh b/tests/flakes/flakes.sh
index 36bffcf3b..267e2cd6f 100644
--- a/tests/flakes.sh
+++ b/tests/flakes/flakes.sh
@@ -1,67 +1,30 @@
-source common.sh
+source ./common.sh
 
-if [[ -z $(type -p git) ]]; then
-    echo "Git not installed; skipping flake tests"
-    exit 99
-fi
+requireGit
 
 clearStore
 rm -rf $TEST_HOME/.cache $TEST_HOME/.config
 
-registry=$TEST_ROOT/registry.json
-
 flake1Dir=$TEST_ROOT/flake1
 flake2Dir=$TEST_ROOT/flake2
 flake3Dir=$TEST_ROOT/flake3
 flake5Dir=$TEST_ROOT/flake5
-flake6Dir=$TEST_ROOT/flake6
 flake7Dir=$TEST_ROOT/flake7
-templatesDir=$TEST_ROOT/templates
 nonFlakeDir=$TEST_ROOT/nonFlake
 badFlakeDir=$TEST_ROOT/badFlake
-flakeA=$TEST_ROOT/flakeA
-flakeB=$TEST_ROOT/flakeB
 flakeGitBare=$TEST_ROOT/flakeGitBare
-flakeFollowsA=$TEST_ROOT/follows/flakeA
-flakeFollowsB=$TEST_ROOT/follows/flakeA/flakeB
-flakeFollowsC=$TEST_ROOT/follows/flakeA/flakeB/flakeC
-flakeFollowsD=$TEST_ROOT/follows/flakeA/flakeD
-flakeFollowsE=$TEST_ROOT/follows/flakeA/flakeE
-
-for repo in $flake1Dir $flake2Dir $flake3Dir $flake7Dir $templatesDir $nonFlakeDir $flakeA $flakeB $flakeFollowsA; do
-    rm -rf $repo $repo.tmp
-    mkdir -p $repo
 
+for repo in $flake1Dir $flake2Dir $flake3Dir $flake7Dir $nonFlakeDir; do
     # Give one repo a non-main initial branch.
     extraArgs=
     if [[ $repo == $flake2Dir ]]; then
       extraArgs="--initial-branch=main"
     fi
 
-    git -C $repo init $extraArgs
-    git -C $repo config user.email "foobar@example.com"
-    git -C $repo config user.name "Foobar"
+    createGitRepo "$repo" "$extraArgs"
 done
 
-cat > $flake1Dir/flake.nix <<EOF
-{
-  description = "Bla bla";
-
-  outputs = inputs: rec {
-    packages.$system = rec {
-      foo = import ./simple.nix;
-      default = foo;
-    };
-
-    # To test "nix flake init".
-    legacyPackages.x86_64-linux.hello = import ./simple.nix;
-  };
-}
-EOF
-
-cp ./simple.nix ./simple.builder.sh ./config.nix $flake1Dir/
-git -C $flake1Dir add flake.nix simple.nix simple.builder.sh config.nix
-git -C $flake1Dir commit -m 'Initial'
+createSimpleGitFlake $flake1Dir
 
 cat > $flake2Dir/flake.nix <<EOF
 {
@@ -105,12 +68,10 @@ nix registry add --registry $registry flake1 git+file://$flake1Dir
 nix registry add --registry $registry flake2 git+file://$flake2Dir
 nix registry add --registry $registry flake3 git+file://$flake3Dir
 nix registry add --registry $registry flake4 flake3
-nix registry add --registry $registry flake5 hg+file://$flake5Dir
 nix registry add --registry $registry nixpkgs flake1
-nix registry add --registry $registry templates git+file://$templatesDir
 
 # Test 'nix flake list'.
-[[ $(nix registry list | wc -l) == 7 ]]
+[[ $(nix registry list | wc -l) == 5 ]]
 
 # Test 'nix flake metadata'.
 nix flake metadata flake1
@@ -291,7 +252,7 @@ cat > $flake3Dir/flake.nix <<EOF
 }
 EOF
 
-cp ./config.nix $flake3Dir
+cp ../config.nix $flake3Dir
 
 git -C $flake3Dir add flake.nix config.nix
 git -C $flake3Dir commit -m 'Add nonFlakeInputs'
@@ -366,161 +327,19 @@ nix build -o $TEST_ROOT/result flake4/removeXyzzy#sth
 
 # Testing the nix CLI
 nix registry add flake1 flake3
-[[ $(nix registry list | wc -l) == 8 ]]
+[[ $(nix registry list | wc -l) == 6 ]]
 nix registry pin flake1
-[[ $(nix registry list | wc -l) == 8 ]]
+[[ $(nix registry list | wc -l) == 6 ]]
 nix registry pin flake1 flake3
-[[ $(nix registry list | wc -l) == 8 ]]
+[[ $(nix registry list | wc -l) == 6 ]]
 nix registry remove flake1
-[[ $(nix registry list | wc -l) == 7 ]]
-
-# Test 'nix flake init'.
-cat > $templatesDir/flake.nix <<EOF
-{
-  description = "Some templates";
-
-  outputs = { self }: {
-    templates = rec {
-      trivial = {
-        path = ./trivial;
-        description = "A trivial flake";
-        welcomeText = ''
-            Welcome to my trivial flake
-        '';
-      };
-      default = trivial;
-    };
-  };
-}
-EOF
-
-mkdir $templatesDir/trivial
-
-cat > $templatesDir/trivial/flake.nix <<EOF
-{
-  description = "A flake for building Hello World";
-
-  outputs = { self, nixpkgs }: {
-    packages.x86_64-linux = rec {
-      hello = nixpkgs.legacyPackages.x86_64-linux.hello;
-      default = hello;
-    };
-  };
-}
-EOF
-
-git -C $templatesDir add flake.nix trivial/flake.nix
-git -C $templatesDir commit -m 'Initial'
-
-nix flake check templates
-nix flake show templates
-nix flake show templates --json | jq
-
-(cd $flake7Dir && nix flake init)
-(cd $flake7Dir && nix flake init) # check idempotence
-git -C $flake7Dir add flake.nix
-nix flake check $flake7Dir
-nix flake show $flake7Dir
-nix flake show $flake7Dir --json | jq
-git -C $flake7Dir commit -a -m 'Initial'
-
-# Test 'nix flake new'.
-rm -rf $flake6Dir
-nix flake new -t templates#trivial $flake6Dir
-nix flake new -t templates#trivial $flake6Dir # check idempotence
-nix flake check $flake6Dir
+[[ $(nix registry list | wc -l) == 5 ]]
 
 # Test 'nix flake clone'.
 rm -rf $TEST_ROOT/flake1-v2
 nix flake clone flake1 --dest $TEST_ROOT/flake1-v2
 [ -e $TEST_ROOT/flake1-v2/flake.nix ]
 
-# More 'nix flake check' tests.
-cat > $flake3Dir/flake.nix <<EOF
-{
-  outputs = { flake1, self }: {
-    overlay = final: prev: {
-    };
-  };
-}
-EOF
-
-nix flake check $flake3Dir
-
-cat > $flake3Dir/flake.nix <<EOF
-{
-  outputs = { flake1, self }: {
-    overlay = finalll: prev: {
-    };
-  };
-}
-EOF
-
-(! nix flake check $flake3Dir)
-
-cat > $flake3Dir/flake.nix <<EOF
-{
-  outputs = { flake1, self }: {
-    nixosModules.foo = {
-      a.b.c = 123;
-      foo = true;
-    };
-  };
-}
-EOF
-
-nix flake check $flake3Dir
-
-cat > $flake3Dir/flake.nix <<EOF
-{
-  outputs = { flake1, self }: {
-    nixosModules.foo = {
-      a.b.c = 123;
-      foo = assert false; true;
-    };
-  };
-}
-EOF
-
-(! nix flake check $flake3Dir)
-
-cat > $flake3Dir/flake.nix <<EOF
-{
-  outputs = { flake1, self }: {
-    nixosModule = { config, pkgs, ... }: {
-      a.b.c = 123;
-    };
-  };
-}
-EOF
-
-nix flake check $flake3Dir
-
-cat > $flake3Dir/flake.nix <<EOF
-{
-  outputs = { flake1, self }: {
-    nixosModule = { config, pkgs }: {
-      a.b.c = 123;
-    };
-  };
-}
-EOF
-
-(! nix flake check $flake3Dir)
-
-cat > $flake3Dir/flake.nix <<EOF
-{
-  outputs = { flake1, self }: {
-    packages.system-1.default = "foo";
-    packages.system-2.default = "bar";
-  };
-}
-EOF
-
-checkRes=$(nix flake check --keep-going $flake3Dir 2>&1 && fail "nix flake check should have failed" || true)
-echo "$checkRes" | grep -q "packages.system-1.default"
-echo "$checkRes" | grep -q "packages.system-2.default"
-
 # Test 'follows' inputs.
 cat > $flake3Dir/flake.nix <<EOF
 {
@@ -563,6 +382,10 @@ nix flake lock $flake3Dir
 [[ $(jq -c .nodes.root.inputs.bar $flake3Dir/flake.lock) = '["flake2"]' ]]
 
 # Test overriding inputs of inputs.
+writeTrivialFlake $flake7Dir
+git -C $flake7Dir add flake.nix
+git -C $flake7Dir commit -m 'Initial'
+
 cat > $flake3Dir/flake.nix <<EOF
 {
   inputs.flake2.inputs.flake1 = {
@@ -597,50 +420,9 @@ rm -rf $flakeGitBare
 git clone --bare $flake1Dir $flakeGitBare
 nix build -o $TEST_ROOT/result git+file://$flakeGitBare
 
-# Test Mercurial flakes.
-rm -rf $flake5Dir
-mkdir $flake5Dir
-
-cat > $flake5Dir/flake.nix <<EOF
-{
-  outputs = { self, flake1 }: {
-    packages.$system.default = flake1.packages.$system.default;
-    expr = assert builtins.pathExists ./flake.lock; 123;
-  };
-}
-EOF
-
-if [[ -n $(type -p hg) ]]; then
-    hg init $flake5Dir
-
-    hg add $flake5Dir/flake.nix
-    hg commit --config ui.username=foobar@example.org $flake5Dir -m 'Initial commit'
-
-    nix build -o $TEST_ROOT/result hg+file://$flake5Dir
-    [[ -e $TEST_ROOT/result/hello ]]
-
-    (! nix flake metadata --json hg+file://$flake5Dir | jq -e -r .revision)
-
-    nix eval hg+file://$flake5Dir#expr
-
-    nix eval hg+file://$flake5Dir#expr
-
-    (! nix eval hg+file://$flake5Dir#expr --no-allow-dirty)
-
-    (! nix flake metadata --json hg+file://$flake5Dir | jq -e -r .revision)
-
-    hg commit --config ui.username=foobar@example.org $flake5Dir -m 'Add lock file'
-
-    nix flake metadata --json hg+file://$flake5Dir --refresh | jq -e -r .revision
-    nix flake metadata --json hg+file://$flake5Dir
-    [[ $(nix flake metadata --json hg+file://$flake5Dir | jq -e -r .revCount) = 1 ]]
-
-    nix build -o $TEST_ROOT/result hg+file://$flake5Dir --no-registries --no-allow-dirty
-    nix build -o $TEST_ROOT/result hg+file://$flake5Dir --no-use-registries --no-allow-dirty
-fi
-
 # Test path flakes.
-rm -rf $flake5Dir/.hg $flake5Dir/flake.lock
+mkdir -p $flake5Dir
+writeDependentFlake $flake5Dir
 nix flake lock path://$flake5Dir
 
 # Test tarball flakes.
@@ -678,165 +460,6 @@ nix flake lock $flake3Dir --update-input flake2/flake1
 # Test 'nix flake metadata --json'.
 nix flake metadata $flake3Dir --json | jq .
 
-# Test circular flake dependencies.
-cat > $flakeA/flake.nix <<EOF
-{
-  inputs.b.url = git+file://$flakeB;
-  inputs.b.inputs.a.follows = "/";
-
-  outputs = { self, nixpkgs, b }: {
-    foo = 123 + b.bar;
-    xyzzy = 1000;
-  };
-}
-EOF
-
-git -C $flakeA add flake.nix
-
-cat > $flakeB/flake.nix <<EOF
-{
-  inputs.a.url = git+file://$flakeA;
-
-  outputs = { self, nixpkgs, a }: {
-    bar = 456 + a.xyzzy;
-  };
-}
-EOF
-
-git -C $flakeB add flake.nix
-git -C $flakeB commit -a -m 'Foo'
-
-[[ $(nix eval $flakeA#foo) = 1579 ]]
-[[ $(nix eval $flakeA#foo) = 1579 ]]
-
-sed -i $flakeB/flake.nix -e 's/456/789/'
-git -C $flakeB commit -a -m 'Foo'
-
-[[ $(nix eval --update-input b $flakeA#foo) = 1912 ]]
-
-# Test list-inputs with circular dependencies
-nix flake metadata $flakeA
-
-# Test flake follow paths
-mkdir -p $flakeFollowsB
-mkdir -p $flakeFollowsC
-mkdir -p $flakeFollowsD
-mkdir -p $flakeFollowsE
-
-cat > $flakeFollowsA/flake.nix <<EOF
-{
-    description = "Flake A";
-    inputs = {
-        B = {
-            url = "path:./flakeB";
-            inputs.foobar.follows = "foobar";
-        };
-
-        foobar.url = "path:$flakeFollowsA/flakeE";
-    };
-    outputs = { ... }: {};
-}
-EOF
-
-cat > $flakeFollowsB/flake.nix <<EOF
-{
-    description = "Flake B";
-    inputs = {
-        foobar.url = "path:$flakeFollowsA/flakeE";
-        goodoo.follows = "C/goodoo";
-        C = {
-            url = "path:./flakeC";
-            inputs.foobar.follows = "foobar";
-        };
-    };
-    outputs = { ... }: {};
-}
-EOF
-
-cat > $flakeFollowsC/flake.nix <<EOF
-{
-    description = "Flake C";
-    inputs = {
-        foobar.url = "path:$flakeFollowsA/flakeE";
-        goodoo.follows = "foobar";
-    };
-    outputs = { ... }: {};
-}
-EOF
-
-cat > $flakeFollowsD/flake.nix <<EOF
-{
-    description = "Flake D";
-    inputs = {};
-    outputs = { ... }: {};
-}
-EOF
-
-cat > $flakeFollowsE/flake.nix <<EOF
-{
-    description = "Flake E";
-    inputs = {};
-    outputs = { ... }: {};
-}
-EOF
-
-git -C $flakeFollowsA add flake.nix flakeB/flake.nix \
-  flakeB/flakeC/flake.nix flakeD/flake.nix flakeE/flake.nix
-
-nix flake metadata $flakeFollowsA
-
-nix flake update $flakeFollowsA
-
-oldLock="$(cat "$flakeFollowsA/flake.lock")"
-
-# Ensure that locking twice doesn't change anything
-
-nix flake lock $flakeFollowsA
-
-newLock="$(cat "$flakeFollowsA/flake.lock")"
-
-diff <(echo "$newLock") <(echo "$oldLock")
-
-[[ $(jq -c .nodes.B.inputs.C $flakeFollowsA/flake.lock) = '"C"' ]]
-[[ $(jq -c .nodes.B.inputs.foobar $flakeFollowsA/flake.lock) = '["foobar"]' ]]
-[[ $(jq -c .nodes.C.inputs.foobar $flakeFollowsA/flake.lock) = '["B","foobar"]' ]]
-
-# Ensure removing follows from flake.nix removes them from the lockfile
-
-cat > $flakeFollowsA/flake.nix <<EOF
-{
-    description = "Flake A";
-    inputs = {
-        B = {
-            url = "path:./flakeB";
-            inputs.nonFlake.follows = "D";
-        };
-        D.url = "path:./flakeD";
-    };
-    outputs = { ... }: {};
-}
-EOF
-
-nix flake lock $flakeFollowsA
-
-[[ $(jq -c .nodes.B.inputs.foobar $flakeFollowsA/flake.lock) = '"foobar"' ]]
-jq -r -c '.nodes | keys | .[]' $flakeFollowsA/flake.lock | grep "^foobar$"
-
-# Ensure a relative path is not allowed to go outside the store path
-cat > $flakeFollowsA/flake.nix <<EOF
-{
-    description = "Flake A";
-    inputs = {
-        B.url = "path:../flakeB";
-    };
-    outputs = { ... }: {};
-}
-EOF
-
-git -C $flakeFollowsA add flake.nix
-
-nix flake lock $flakeFollowsA 2>&1 | grep 'points outside'
-
 # Test flake in store does not evaluate
 rm -rf $badFlakeDir
 mkdir $badFlakeDir
diff --git a/tests/flakes/follow-paths.sh b/tests/flakes/follow-paths.sh
new file mode 100644
index 000000000..19cc1bafa
--- /dev/null
+++ b/tests/flakes/follow-paths.sh
@@ -0,0 +1,150 @@
+source ./common.sh
+
+requireGit
+
+flakeFollowsA=$TEST_ROOT/follows/flakeA
+flakeFollowsB=$TEST_ROOT/follows/flakeA/flakeB
+flakeFollowsC=$TEST_ROOT/follows/flakeA/flakeB/flakeC
+flakeFollowsD=$TEST_ROOT/follows/flakeA/flakeD
+flakeFollowsE=$TEST_ROOT/follows/flakeA/flakeE
+
+# Test following path flakerefs.
+createGitRepo $flakeFollowsA
+mkdir -p $flakeFollowsB
+mkdir -p $flakeFollowsC
+mkdir -p $flakeFollowsD
+mkdir -p $flakeFollowsE
+
+cat > $flakeFollowsA/flake.nix <<EOF
+{
+    description = "Flake A";
+    inputs = {
+        B = {
+            url = "path:./flakeB";
+            inputs.foobar.follows = "foobar";
+        };
+
+        foobar.url = "path:$flakeFollowsA/flakeE";
+    };
+    outputs = { ... }: {};
+}
+EOF
+
+cat > $flakeFollowsB/flake.nix <<EOF
+{
+    description = "Flake B";
+    inputs = {
+        foobar.url = "path:$flakeFollowsA/flakeE";
+        goodoo.follows = "C/goodoo";
+        C = {
+            url = "path:./flakeC";
+            inputs.foobar.follows = "foobar";
+        };
+    };
+    outputs = { ... }: {};
+}
+EOF
+
+cat > $flakeFollowsC/flake.nix <<EOF
+{
+    description = "Flake C";
+    inputs = {
+        foobar.url = "path:$flakeFollowsA/flakeE";
+        goodoo.follows = "foobar";
+    };
+    outputs = { ... }: {};
+}
+EOF
+
+cat > $flakeFollowsD/flake.nix <<EOF
+{
+    description = "Flake D";
+    inputs = {};
+    outputs = { ... }: {};
+}
+EOF
+
+cat > $flakeFollowsE/flake.nix <<EOF
+{
+    description = "Flake E";
+    inputs = {};
+    outputs = { ... }: {};
+}
+EOF
+
+git -C $flakeFollowsA add flake.nix flakeB/flake.nix \
+  flakeB/flakeC/flake.nix flakeD/flake.nix flakeE/flake.nix
+
+nix flake metadata $flakeFollowsA
+
+nix flake update $flakeFollowsA
+
+nix flake lock $flakeFollowsA
+
+oldLock="$(cat "$flakeFollowsA/flake.lock")"
+
+# Ensure that locking twice doesn't change anything
+
+nix flake lock $flakeFollowsA
+
+newLock="$(cat "$flakeFollowsA/flake.lock")"
+
+diff <(echo "$newLock") <(echo "$oldLock")
+
+[[ $(jq -c .nodes.B.inputs.C $flakeFollowsA/flake.lock) = '"C"' ]]
+[[ $(jq -c .nodes.B.inputs.foobar $flakeFollowsA/flake.lock) = '["foobar"]' ]]
+[[ $(jq -c .nodes.C.inputs.foobar $flakeFollowsA/flake.lock) = '["B","foobar"]' ]]
+
+# Ensure removing follows from flake.nix removes them from the lockfile
+
+cat > $flakeFollowsA/flake.nix <<EOF
+{
+    description = "Flake A";
+    inputs = {
+        B = {
+            url = "path:./flakeB";
+        };
+        D.url = "path:./flakeD";
+    };
+    outputs = { ... }: {};
+}
+EOF
+
+nix flake lock $flakeFollowsA
+
+[[ $(jq -c .nodes.B.inputs.foobar $flakeFollowsA/flake.lock) = '"foobar"' ]]
+jq -r -c '.nodes | keys | .[]' $flakeFollowsA/flake.lock | grep "^foobar$"
+
+# Ensure a relative path is not allowed to go outside the store path
+cat > $flakeFollowsA/flake.nix <<EOF
+{
+    description = "Flake A";
+    inputs = {
+        B.url = "path:../flakeB";
+    };
+    outputs = { ... }: {};
+}
+EOF
+
+git -C $flakeFollowsA add flake.nix
+
+nix flake lock $flakeFollowsA 2>&1 | grep 'points outside'
+
+# Non-existant follows should print a warning.
+cat >$flakeFollowsA/flake.nix <<EOF
+{
+    description = "Flake A";
+    inputs.B = {
+        url = "path:./flakeB";
+        inputs.invalid.follows = "D";
+        inputs.invalid2.url = "path:./flakeD";
+    };
+    inputs.D.url = "path:./flakeD";
+    outputs = { ... }: {};
+}
+EOF
+
+git -C $flakeFollowsA add flake.nix
+
+nix flake lock $flakeFollowsA 2>&1 | grep "warning: input 'B' has an override for a non-existent input 'invalid'"
+nix flake lock $flakeFollowsA 2>&1 | grep "warning: input 'B' has an override for a non-existent input 'invalid2'"
diff --git a/tests/flakes/init.sh b/tests/flakes/init.sh
new file mode 100644
index 000000000..36cb9956a
--- /dev/null
+++ b/tests/flakes/init.sh
@@ -0,0 +1,87 @@
+source ./common.sh
+
+requireGit
+
+templatesDir=$TEST_ROOT/templates
+flakeDir=$TEST_ROOT/flake
+nixpkgsDir=$TEST_ROOT/nixpkgs
+
+nix registry add --registry $registry templates git+file://$templatesDir
+nix registry add --registry $registry nixpkgs git+file://$nixpkgsDir
+
+createGitRepo $nixpkgsDir
+createSimpleGitFlake $nixpkgsDir
+
+# Test 'nix flake init'.
+createGitRepo $templatesDir
+
+cat > $templatesDir/flake.nix <<EOF
+{
+  description = "Some templates";
+
+  outputs = { self }: {
+    templates = rec {
+      trivial = {
+        path = ./trivial;
+        description = "A trivial flake";
+        welcomeText = ''
+            Welcome to my trivial flake
+        '';
+      };
+      default = trivial;
+    };
+  };
+}
+EOF
+
+mkdir $templatesDir/trivial
+
+cat > $templatesDir/trivial/flake.nix <<EOF
+{
+  description = "A flake for building Hello World";
+
+  outputs = { self, nixpkgs }: {
+    packages.x86_64-linux = rec {
+      hello = nixpkgs.legacyPackages.x86_64-linux.hello;
+      default = hello;
+    };
+  };
+}
+EOF
+echo a > $templatesDir/trivial/a
+echo b > $templatesDir/trivial/b
+
+git -C $templatesDir add flake.nix trivial/
+git -C $templatesDir commit -m 'Initial'
+
+nix flake check templates
+nix flake show templates
+nix flake show templates --json | jq
+
+createGitRepo $flakeDir
+(cd $flakeDir && nix flake init)
+(cd $flakeDir && nix flake init) # check idempotence
+git -C $flakeDir add flake.nix
+nix flake check $flakeDir
+nix flake show $flakeDir
+nix flake show $flakeDir --json | jq
+git -C $flakeDir commit -a -m 'Initial'
+
+# Test 'nix flake init' with benign conflicts
+createGitRepo "$flakeDir"
+echo a > $flakeDir/a
+(cd $flakeDir && nix flake init) # check idempotence
+
+# Test 'nix flake init' with conflicts
+createGitRepo "$flakeDir"
+echo b > $flakeDir/a
+pushd $flakeDir
+(! nix flake init) |& grep "refusing to overwrite existing file '$flakeDir/a'"
+popd
+git -C $flakeDir commit -a -m 'Changed'
+
+# Test 'nix flake new'.
+rm -rf $flakeDir
+nix flake new -t templates#trivial $flakeDir
+nix flake new -t templates#trivial $flakeDir # check idempotence
+nix flake check $flakeDir
diff --git a/tests/flakes/mercurial.sh b/tests/flakes/mercurial.sh
new file mode 100644
index 000000000..2614006c8
--- /dev/null
+++ b/tests/flakes/mercurial.sh
@@ -0,0 +1,46 @@
+source ./common.sh
+
+if [[ -z $(type -p hg) ]]; then
+    echo "Mercurial not installed; skipping"
+    exit 99
+fi
+
+flake1Dir=$TEST_ROOT/flake-hg1
+mkdir -p $flake1Dir
+writeSimpleFlake $flake1Dir
+hg init $flake1Dir
+
+nix registry add --registry $registry flake1 hg+file://$flake1Dir
+
+flake2Dir=$TEST_ROOT/flake-hg2
+mkdir -p $flake2Dir
+writeDependentFlake $flake2Dir
+hg init $flake2Dir
+
+hg add $flake1Dir/*
+hg commit --config ui.username=foobar@example.org $flake1Dir -m 'Initial commit'
+
+hg add $flake2Dir/flake.nix
+hg commit --config ui.username=foobar@example.org $flake2Dir -m 'Initial commit'
+
+nix build -o $TEST_ROOT/result hg+file://$flake2Dir
+[[ -e $TEST_ROOT/result/hello ]]
+
+(! nix flake metadata --json hg+file://$flake2Dir | jq -e -r .revision)
+
+nix eval hg+file://$flake2Dir#expr
+
+nix eval hg+file://$flake2Dir#expr
+
+(! nix eval hg+file://$flake2Dir#expr --no-allow-dirty)
+
+(! nix flake metadata --json hg+file://$flake2Dir | jq -e -r .revision)
+
+hg commit --config ui.username=foobar@example.org $flake2Dir -m 'Add lock file'
+
+nix flake metadata --json hg+file://$flake2Dir --refresh | jq -e -r .revision
+nix flake metadata --json hg+file://$flake2Dir
+[[ $(nix flake metadata --json hg+file://$flake2Dir | jq -e -r .revCount) = 1 ]]
+
+nix build -o $TEST_ROOT/result hg+file://$flake2Dir --no-registries --no-allow-dirty
+nix build -o $TEST_ROOT/result hg+file://$flake2Dir --no-use-registries --no-allow-dirty
diff --git a/tests/flakes-run.sh b/tests/flakes/run.sh
index 88fc3e628..9fa51d1c7 100644
--- a/tests/flakes-run.sh
+++ b/tests/flakes/run.sh
@@ -1,8 +1,8 @@
-source common.sh
+source ../common.sh
 
 clearStore
 rm -rf $TEST_HOME/.cache $TEST_HOME/.config $TEST_HOME/.local
-cp ./shell-hello.nix ./config.nix $TEST_HOME
+cp ../shell-hello.nix ../config.nix $TEST_HOME
 cd $TEST_HOME
 
 cat <<EOF > flake.nix
diff --git a/tests/flake-searching.sh b/tests/flakes/search-root.sh
index db241f6d2..d8586dc8a 100644
--- a/tests/flake-searching.sh
+++ b/tests/flakes/search-root.sh
@@ -1,15 +1,11 @@
 source common.sh
 
-if [[ -z $(type -p git) ]]; then
-    echo "Git not installed; skipping flake search tests"
-    exit 99
-fi
-
 clearStore
 
-cp ./simple.nix ./simple.builder.sh ./config.nix $TEST_HOME
+writeSimpleFlake $TEST_HOME
 cd $TEST_HOME
 mkdir -p foo/subdir
+
 echo '{ outputs = _: {}; }' > foo/flake.nix
 cat <<EOF > flake.nix
 {
@@ -43,10 +39,12 @@ nix build --override-input foo . || fail "flake should search up directories whe
 sed "s,$PWD/foo,$PWD/foo/subdir,g" -i flake.nix
 ! nix build || fail "flake should not search upwards when part of inputs"
 
-pushd subdir
-git init
-for i in "${success[@]}" "${failure[@]}"; do
-    ! nix build $i || fail "flake should not search past a git repository"
-done
-rm -rf .git
-popd
+if [[ -n $(type -p git) ]]; then
+    pushd subdir
+    git init
+    for i in "${success[@]}" "${failure[@]}"; do
+        ! nix build $i || fail "flake should not search past a git repository"
+    done
+    rm -rf .git
+    popd
+fi
diff --git a/tests/fmt.sh b/tests/fmt.sh
index bc05118ff..254681ca2 100644
--- a/tests/fmt.sh
+++ b/tests/fmt.sh
@@ -18,7 +18,12 @@ cat << EOF > flake.nix
       with import ./config.nix;
       mkDerivation {
         name = "formatter";
-        buildCommand = "mkdir -p \$out/bin; cp \${./fmt.simple.sh} \$out/bin/formatter";
+        buildCommand = ''
+          mkdir -p \$out/bin
+          echo "#! ${shell}" > \$out/bin/formatter
+          cat \${./fmt.simple.sh} >> \$out/bin/formatter
+          chmod +x \$out/bin/formatter
+        '';
       };
   };
 }
diff --git a/tests/github-flakes.nix b/tests/github-flakes.nix
index 7ac397d81..fc481c7e3 100644
--- a/tests/github-flakes.nix
+++ b/tests/github-flakes.nix
@@ -7,7 +7,7 @@ with import (nixpkgs + "/nixos/lib/testing-python.nix") {
 
 let
 
-  # Generate a fake root CA and a fake github.com certificate.
+  # Generate a fake root CA and a fake api.github.com / channels.nixos.org certificate.
   cert = pkgs.runCommand "cert" { buildInputs = [ pkgs.openssl ]; }
     ''
       mkdir -p $out
@@ -18,7 +18,7 @@ let
 
       openssl req -newkey rsa:2048 -nodes -keyout $out/server.key \
         -subj "/C=CN/ST=Denial/L=Springfield/O=Dis/CN=github.com" -out server.csr
-      openssl x509 -req -extfile <(printf "subjectAltName=DNS:api.github.com,DNS:github.com,DNS:raw.githubusercontent.com") \
+      openssl x509 -req -extfile <(printf "subjectAltName=DNS:api.github.com,DNS:channels.nixos.org") \
         -days 36500 -in server.csr -CA $out/ca.crt -CAkey ca.key -CAcreateserial -out $out/server.crt
     '';
 
@@ -67,7 +67,7 @@ makeTest (
   name = "github-flakes";
 
   nodes =
-    { # Impersonate github.com and api.github.com.
+    {
       github =
         { config, pkgs, ... }:
         { networking.firewall.allowedTCPPorts = [ 80 443 ];
@@ -77,12 +77,12 @@ makeTest (
           services.httpd.extraConfig = ''
             ErrorLog syslog:local6
           '';
-          services.httpd.virtualHosts."github.com" =
+          services.httpd.virtualHosts."channels.nixos.org" =
             { forceSSL = true;
               sslServerKey = "${cert}/server.key";
               sslServerCert = "${cert}/server.crt";
               servedDirs =
-                [ { urlPath = "/NixOS/flake-registry/raw/master";
+                [ { urlPath = "/";
                     dir = registry;
                   }
                 ];
@@ -103,13 +103,13 @@ makeTest (
         { config, lib, pkgs, nodes, ... }:
         { virtualisation.writableStore = true;
           virtualisation.diskSize = 2048;
-          virtualisation.pathsInNixDB = [ pkgs.hello pkgs.fuse ];
+          virtualisation.additionalPaths = [ pkgs.hello pkgs.fuse ];
           virtualisation.memorySize = 4096;
           nix.binaryCaches = lib.mkForce [ ];
           nix.extraOptions = "experimental-features = nix-command flakes";
           environment.systemPackages = [ pkgs.jq ];
           networking.hosts.${(builtins.head nodes.github.config.networking.interfaces.eth1.ipv4.addresses).address} =
-            [ "github.com" "api.github.com" "raw.githubusercontent.com" ];
+            [ "channels.nixos.org" "api.github.com" ];
           security.pki.certificateFiles = [ "${cert}/ca.crt" ];
         };
     };
@@ -123,7 +123,7 @@ makeTest (
 
     github.wait_for_unit("httpd.service")
 
-    client.succeed("curl -v https://github.com/ >&2")
+    client.succeed("curl -v https://api.github.com/ >&2")
     client.succeed("nix registry list | grep nixpkgs")
 
     rev = client.succeed("nix flake info nixpkgs --json | jq -r .revision")
diff --git a/tests/lang.sh b/tests/lang.sh
index f09eaeb31..c0b0fc58c 100644
--- a/tests/lang.sh
+++ b/tests/lang.sh
@@ -5,6 +5,8 @@ export NIX_REMOTE=dummy://
 
 nix-instantiate --eval -E 'builtins.trace "Hello" 123' 2>&1 | grep -q Hello
 nix-instantiate --eval -E 'builtins.addErrorContext "Hello" 123' 2>&1
+nix-instantiate --trace-verbose --eval -E 'builtins.traceVerbose "Hello" 123' 2>&1 | grep -q Hello
+(! nix-instantiate --eval -E 'builtins.traceVerbose "Hello" 123' 2>&1 | grep -q Hello)
 (! nix-instantiate --show-trace --eval -E 'builtins.addErrorContext "Hello" 123' 2>&1 | grep -q Hello)
 nix-instantiate --show-trace --eval -E 'builtins.addErrorContext "Hello" (throw "Foo")' 2>&1 | grep -q Hello
 
diff --git a/tests/local.mk b/tests/local.mk
index 2932d2b13..5e48ceae1 100644
--- a/tests/local.mk
+++ b/tests/local.mk
@@ -1,6 +1,12 @@
 nix_tests = \
-  flakes.sh \
-  flakes-run.sh \
+  flakes/flakes.sh \
+  flakes/run.sh \
+  flakes/mercurial.sh \
+  flakes/circular.sh \
+  flakes/init.sh \
+  flakes/follow-paths.sh \
+  flakes/bundle.sh \
+  flakes/check.sh \
   ca/gc.sh \
   gc.sh \
   remote-store.sh \
@@ -44,7 +50,7 @@ nix_tests = \
   secure-drv-outputs.sh \
   restricted.sh \
   fetchGitSubmodules.sh \
-  flake-searching.sh \
+  flakes/search-root.sh \
   ca/duplicate-realisation-in-closure.sh \
   readfile-context.sh \
   nix-channel.sh \
@@ -80,7 +86,7 @@ nix_tests = \
   nix-copy-ssh.sh \
   post-hook.sh \
   function-trace.sh \
-  flake-local-settings.sh \
+  flakes/config.sh \
   fmt.sh \
   eval-store.sh \
   why-depends.sh \
@@ -102,6 +108,7 @@ nix_tests = \
   suggestions.sh \
   store-ping.sh \
   fetchClosure.sh \
+  completions.sh \
   impure-derivations.sh
 
 ifeq ($(HAVE_LIBCPUID), 1)
@@ -114,4 +121,8 @@ tests-environment = NIX_REMOTE= $(bash) -e
 
 clean-files += $(d)/common.sh $(d)/config.nix $(d)/ca/config.nix
 
-test-deps += tests/common.sh tests/config.nix tests/ca/config.nix tests/plugins/libplugintest.$(SO_EXT)
+test-deps += tests/common.sh tests/config.nix tests/ca/config.nix
+
+ifeq ($(BUILD_SHARED_LIBS), 1)
+  test-deps += tests/plugins/libplugintest.$(SO_EXT)
+endif
diff --git a/tests/nix-copy-closure.nix b/tests/nix-copy-closure.nix
index 1b63a3fca..ba8b2cfc9 100644
--- a/tests/nix-copy-closure.nix
+++ b/tests/nix-copy-closure.nix
@@ -14,7 +14,7 @@ makeTest (let pkgA = pkgs.cowsay; pkgB = pkgs.wget; pkgC = pkgs.hello; pkgD = pk
     { client =
         { config, lib, pkgs, ... }:
         { virtualisation.writableStore = true;
-          virtualisation.pathsInNixDB = [ pkgA pkgD.drvPath ];
+          virtualisation.additionalPaths = [ pkgA pkgD.drvPath ];
           nix.binaryCaches = lib.mkForce [ ];
         };
 
@@ -22,7 +22,7 @@ makeTest (let pkgA = pkgs.cowsay; pkgB = pkgs.wget; pkgC = pkgs.hello; pkgD = pk
         { config, pkgs, ... }:
         { services.openssh.enable = true;
           virtualisation.writableStore = true;
-          virtualisation.pathsInNixDB = [ pkgB pkgC ];
+          virtualisation.additionalPaths = [ pkgB pkgC ];
         };
     };
 
diff --git a/tests/nix-shell.sh b/tests/nix-shell.sh
index 3241d7a0f..f291c6f79 100644
--- a/tests/nix-shell.sh
+++ b/tests/nix-shell.sh
@@ -102,3 +102,11 @@ source <(nix print-dev-env -f "$shellDotNix" shellDrv)
 [[ ${arr2[1]} = $'\n' ]]
 [[ ${arr2[2]} = $'x\ny' ]]
 [[ $(fun) = blabla ]]
+
+# Test nix-shell with ellipsis and no `inNixShell` argument (for backwards compat with old nixpkgs)
+cat >$TEST_ROOT/shell-ellipsis.nix <<EOF
+{ system ? "x86_64-linux", ... }@args:
+assert (!(args ? inNixShell));
+(import $shellDotNix { }).shellDrv
+EOF
+nix-shell $TEST_ROOT/shell-ellipsis.nix --run "true"
diff --git a/tests/nss-preload.nix b/tests/nss-preload.nix
index 2610d2b30..64b655ba2 100644
--- a/tests/nss-preload.nix
+++ b/tests/nss-preload.nix
@@ -5,6 +5,42 @@ with import (nixpkgs + "/nixos/lib/testing-python.nix") {
   extraConfigurations = [ { nixpkgs.overlays = [ overlay ]; } ];
 };
 
+let
+  nix-fetch = pkgs.writeText "fetch.nix" ''
+    derivation {
+        # This derivation is an copy from what is available over at
+        # nix.git:corepkgs/fetchurl.nix
+        builder = "builtin:fetchurl";
+
+        # We're going to fetch data from the http_dns instance created before
+        # we expect the content to be the same as the content available there.
+        # ```
+        # $ nix-hash --type sha256 --to-base32 $(echo "hello world" | sha256sum | cut -d " " -f 1)
+        # 0ix4jahrkll5zg01wandq78jw3ab30q4nscph67rniqg5x7r0j59
+        # ```
+        outputHash = "0ix4jahrkll5zg01wandq78jw3ab30q4nscph67rniqg5x7r0j59";
+        outputHashAlgo = "sha256";
+        outputHashMode = "flat";
+
+        name = "example.com";
+        url = "http://example.com";
+
+        unpack = false;
+        executable = false;
+
+        system = "builtin";
+
+        preferLocalBuild = true;
+
+        impureEnvVars = [
+            "http_proxy" "https_proxy" "ftp_proxy" "all_proxy" "no_proxy"
+        ];
+
+        urls = [ "http://example.com" ];
+      }
+  '';
+in
+
 makeTest (
 
 rec {
@@ -68,40 +104,6 @@ rec {
     };
   };
 
-  nix-fetch = pkgs.writeText "fetch.nix" ''
-    derivation {
-        # This derivation is an copy from what is available over at
-        # nix.git:corepkgs/fetchurl.nix
-        builder = "builtin:fetchurl";
-
-        # We're going to fetch data from the http_dns instance created before
-        # we expect the content to be the same as the content available there.
-        # ```
-        # $ nix-hash --type sha256 --to-base32 $(echo "hello world" | sha256sum | cut -d " " -f 1)
-        # 0ix4jahrkll5zg01wandq78jw3ab30q4nscph67rniqg5x7r0j59
-        # ```
-        outputHash = "0ix4jahrkll5zg01wandq78jw3ab30q4nscph67rniqg5x7r0j59";
-        outputHashAlgo = "sha256";
-        outputHashMode = "flat";
-
-        name = "example.com";
-        url = "http://example.com";
-
-        unpack = false;
-        executable = false;
-
-        system = "builtin";
-
-        preferLocalBuild = true;
-
-        impureEnvVars = [
-            "http_proxy" "https_proxy" "ftp_proxy" "all_proxy" "no_proxy"
-        ];
-
-        urls = [ "http://example.com" ];
-      }
-  '';
-
   testScript = { nodes, ... }: ''
     http_dns.wait_for_unit("nginx")
     http_dns.wait_for_open_port(80)
diff --git a/tests/plugins.sh b/tests/plugins.sh
index e22bf4408..6e278ad9d 100644
--- a/tests/plugins.sh
+++ b/tests/plugins.sh
@@ -2,6 +2,11 @@ source common.sh
 
 set -o pipefail
 
+if [[ $BUILD_SHARED_LIBS != 1 ]]; then
+    echo "plugins are not supported"
+    exit 99
+fi
+
 res=$(nix --option setting-set true --option plugin-files $PWD/plugins/libplugintest* eval --expr builtins.anotherNull)
 
 [ "$res"x = "nullx" ]
diff --git a/tests/pure-eval.sh b/tests/pure-eval.sh
index 1a4568ea6..b83ab8afe 100644
--- a/tests/pure-eval.sh
+++ b/tests/pure-eval.sh
@@ -30,3 +30,5 @@ nix eval --store dummy:// --write-to $TEST_ROOT/eval-out --expr '{ x = "foo" + "
 
 rm -rf $TEST_ROOT/eval-out
 (! nix eval --store dummy:// --write-to $TEST_ROOT/eval-out --expr '{ "." = "bla"; }')
+
+(! nix eval --expr '~/foo')
diff --git a/tests/remote-builds.nix b/tests/remote-builds.nix
index b9e7352c0..7b2e6f708 100644
--- a/tests/remote-builds.nix
+++ b/tests/remote-builds.nix
@@ -61,7 +61,7 @@ in
               }
             ];
           virtualisation.writableStore = true;
-          virtualisation.pathsInNixDB = [ config.system.build.extraUtils ];
+          virtualisation.additionalPaths = [ config.system.build.extraUtils ];
           nix.binaryCaches = lib.mkForce [ ];
           programs.ssh.extraConfig = "ConnectTimeout 30";
         };
diff --git a/tests/repl.sh b/tests/repl.sh
index b6937b9e9..c555560cc 100644
--- a/tests/repl.sh
+++ b/tests/repl.sh
@@ -42,6 +42,11 @@ testRepl () {
     echo "$replOutput"
     echo "$replOutput" | grep -qs "while evaluating the file" \
       || fail "nix repl --show-trace doesn't show the trace"
+
+    nix repl "${nixArgs[@]}" --option pure-eval true 2>&1 <<< "builtins.currentSystem" \
+      | grep "attribute 'currentSystem' missing"
+    nix repl "${nixArgs[@]}" 2>&1 <<< "builtins.currentSystem" \
+      | grep "$(nix-instantiate --eval -E 'builtins.currentSystem')"
 }
 
 # Simple test, try building a drv
@@ -50,15 +55,17 @@ testRepl
 testRepl --store "$TEST_ROOT/store?real=$NIX_STORE_DIR"
 
 testReplResponse () {
-    local response="$(nix repl <<< "$1")"
-    echo "$response" | grep -qs "$2" \
+    local commands="$1"; shift
+    local expectedResponse="$1"; shift
+    local response="$(nix repl "$@" <<< "$commands")"
+    echo "$response" | grep -qs "$expectedResponse" \
       || fail "repl command set:
 
-$1
+$commands
 
 does not respond with:
 
-$2
+$expectedResponse
 
 but with:
 
@@ -71,3 +78,48 @@ testReplResponse '
 :a { a = "2"; }
 "result: ${a}"
 ' "result: 2"
+
+testReplResponse '
+drvPath
+' '".*-simple.drv"' \
+$testDir/simple.nix
+
+testReplResponse '
+drvPath
+' '".*-simple.drv"' \
+--file $testDir/simple.nix --experimental-features 'ca-derivations'
+
+testReplResponse '
+drvPath
+' '".*-simple.drv"' \
+--file $testDir/simple.nix --extra-experimental-features 'repl-flake ca-derivations'
+
+mkdir -p flake && cat <<EOF > flake/flake.nix
+{
+    outputs = { self }: {
+        foo = 1;
+        bar.baz = 2;
+
+        changingThing = "beforeChange";
+    };
+}
+EOF
+testReplResponse '
+foo + baz
+' "3" \
+    ./flake ./flake\#bar --experimental-features 'flakes repl-flake'
+
+# Test the `:reload` mechansim with flakes:
+# - Eval `./flake#changingThing`
+# - Modify the flake
+# - Re-eval it
+# - Check that the result has changed
+replResult=$( (
+echo "changingThing"
+sleep 1 # Leave the repl the time to eval 'foo'
+sed -i 's/beforeChange/afterChange/' flake/flake.nix
+echo ":reload"
+echo "changingThing"
+) | nix repl ./flake --experimental-features 'flakes repl-flake')
+echo "$replResult" | grep -qs beforeChange
+echo "$replResult" | grep -qs afterChange
diff --git a/tests/search.sh b/tests/search.sh
index 52e12f381..1a98f5b49 100644
--- a/tests/search.sh
+++ b/tests/search.sh
@@ -28,11 +28,19 @@ nix search -f search.nix '' |grep -q hello
 
 e=$'\x1b' # grep doesn't support \e, \033 or even \x1b
 # Multiple overlapping regexes
-(( $(nix search -f search.nix '' 'oo' 'foo' 'oo' | grep "$e\[32;1mfoo$e\\[0;1m" | wc -l) == 1 ))
-(( $(nix search -f search.nix '' 'broken b' 'en bar' | grep "$e\[32;1mbroken bar$e\\[0m" | wc -l) == 1 ))
+(( $(nix search -f search.nix '' 'oo' 'foo' 'oo' | grep -c "$e\[32;1mfoo$e\\[0;1m") == 1 ))
+(( $(nix search -f search.nix '' 'broken b' 'en bar' | grep -c "$e\[32;1mbroken bar$e\\[0m") == 1 ))
 
 # Multiple matches
 # Searching for 'o' should yield the 'o' in 'broken bar', the 'oo' in foo and 'o' in hello
-(( $(nix search -f search.nix '' 'o' | grep -Eo "$e\[32;1mo{1,2}$e\[(0|0;1)m" | wc -l) == 3 ))
+(( $(nix search -f search.nix '' 'o' | grep -Eoc "$e\[32;1mo{1,2}$e\[(0|0;1)m") == 3 ))
 # Searching for 'b' should yield the 'b' in bar and the two 'b's in 'broken bar'
+# NOTE: This does not work with `grep -c` because it counts the two 'b's in 'broken bar' as one matched line
 (( $(nix search -f search.nix '' 'b' | grep -Eo "$e\[32;1mb$e\[(0|0;1)m" | wc -l) == 3 ))
+
+## Tests for --exclude
+(( $(nix search -f search.nix -e hello | grep -c hello) == 0 ))
+
+(( $(nix search -f search.nix foo --exclude 'foo|bar' | grep -Ec 'foo|bar') == 0 ))
+(( $(nix search -f search.nix foo -e foo --exclude bar | grep -Ec 'foo|bar') == 0 ))
+[[ $(nix search -f search.nix -e bar --json | jq -c 'keys') == '["foo","hello"]' ]]
diff --git a/tests/setuid.nix b/tests/setuid.nix
index 35eb304ed..a83b1fc3a 100644
--- a/tests/setuid.nix
+++ b/tests/setuid.nix
@@ -10,12 +10,12 @@ with import (nixpkgs + "/nixos/lib/testing-python.nix") {
 makeTest {
   name = "setuid";
 
-  machine =
+  nodes.machine =
     { config, lib, pkgs, ... }:
     { virtualisation.writableStore = true;
       nix.binaryCaches = lib.mkForce [ ];
       nix.nixPath = [ "nixpkgs=${lib.cleanSource pkgs.path}" ];
-      virtualisation.pathsInNixDB = [ pkgs.stdenv pkgs.pkgsi686Linux.stdenv ];
+      virtualisation.additionalPaths = [ pkgs.stdenv pkgs.pkgsi686Linux.stdenv ];
     };
 
   testScript = { nodes }: ''
diff --git a/tests/sourcehut-flakes.nix b/tests/sourcehut-flakes.nix
index 6a1930904..daa259dd6 100644
--- a/tests/sourcehut-flakes.nix
+++ b/tests/sourcehut-flakes.nix
@@ -59,7 +59,7 @@ let
       echo 'ref: refs/heads/master' > $out/HEAD
 
       mkdir -p $out/info
-      echo -e '${nixpkgs.rev}\trefs/heads/master' > $out/info/refs
+      echo -e '${nixpkgs.rev}\trefs/heads/master\n${nixpkgs.rev}\trefs/tags/foo-bar' > $out/info/refs
     '';
 
 in
@@ -106,7 +106,7 @@ makeTest (
           {
             virtualisation.writableStore = true;
             virtualisation.diskSize = 2048;
-            virtualisation.pathsInNixDB = [ pkgs.hello pkgs.fuse ];
+            virtualisation.additionalPaths = [ pkgs.hello pkgs.fuse ];
             virtualisation.memorySize = 4096;
             nix.binaryCaches = lib.mkForce [ ];
             nix.extraOptions = ''
@@ -132,6 +132,17 @@ makeTest (
       client.succeed("curl -v https://git.sr.ht/ >&2")
       client.succeed("nix registry list | grep nixpkgs")
 
+      # Test that it resolves HEAD
+      rev = client.succeed("nix flake info sourcehut:~NixOS/nixpkgs --json | jq -r .revision")
+      assert rev.strip() == "${nixpkgs.rev}", "revision mismatch"
+      # Test that it resolves branches
+      rev = client.succeed("nix flake info sourcehut:~NixOS/nixpkgs/master --json | jq -r .revision")
+      assert rev.strip() == "${nixpkgs.rev}", "revision mismatch"
+      # Test that it resolves tags
+      rev = client.succeed("nix flake info sourcehut:~NixOS/nixpkgs/foo-bar --json | jq -r .revision")
+      assert rev.strip() == "${nixpkgs.rev}", "revision mismatch"
+
+      # Registry and pinning test
       rev = client.succeed("nix flake info nixpkgs --json | jq -r .revision")
       assert rev.strip() == "${nixpkgs.rev}", "revision mismatch"