11 files changed, 76 insertions, 9 deletions
diff --git a/tests/check-refs.nix b/tests/check-refs.nix
index 99d69a226..89690e456 100644
--- a/tests/check-refs.nix
+++ b/tests/check-refs.nix
@@ -2,7 +2,7 @@ with import ./config.nix;
 
 rec {
 
-  dep = import ./dependencies.nix;
+  dep = import ./dependencies.nix {};
 
   makeTest = nr: args: mkDerivation ({
     name = "check-refs-" + toString nr;
diff --git a/tests/dependencies.nix b/tests/dependencies.nix
index 45aca1793..be1a7ae9a 100644
--- a/tests/dependencies.nix
+++ b/tests/dependencies.nix
@@ -1,3 +1,4 @@
+{ hashInvalidator ? "" }:
 with import ./config.nix;
 
 let {
@@ -21,6 +22,17 @@ let {
     '';
   };
 
+  fod_input = mkDerivation {
+    name = "fod-input";
+    buildCommand = ''
+      echo ${hashInvalidator}
+      echo FOD > $out
+    '';
+    outputHashMode = "flat";
+    outputHashAlgo = "sha256";
+    outputHash = "1dq9p0hnm1y75q2x40fws5887bq1r840hzdxak0a9djbwvx0b16d";
+  };
+
   body = mkDerivation {
     name = "dependencies-top";
     builder = ./dependencies.builder0.sh + "/FOOBAR/../.";
@@ -29,6 +41,7 @@ let {
     input1_drv = input1;
     input2_drv = input2;
     input0_drv = input0;
+    fod_input_drv = fod_input;
     meta.description = "Random test package";
   };
 
diff --git a/tests/dependencies.sh b/tests/dependencies.sh
index d5cd30396..b93dacac0 100644
--- a/tests/dependencies.sh
+++ b/tests/dependencies.sh
@@ -53,3 +53,20 @@ nix-store -q --referrers-closure "$input2OutPath" | grep "$outPath"
 # Check that the derivers are set properly.
 test $(nix-store -q --deriver "$outPath") = "$drvPath"
 nix-store -q --deriver "$input2OutPath" | grepQuiet -- "-input-2.drv"
+
+# --valid-derivers returns the currently single valid .drv file
+test "$(nix-store -q --valid-derivers "$outPath")" = "$drvPath"
+
+# instantiate a different drv with the same output
+drvPath2=$(nix-instantiate dependencies.nix --argstr hashInvalidator yay)
+
+# now --valid-derivers returns both
+test "$(nix-store -q --valid-derivers "$outPath" | sort)" = "$(sort <<< "$drvPath"$'\n'"$drvPath2")"
+
+# check that nix-store --valid-derivers only returns existing drv
+nix-store --delete "$drvPath"
+test "$(nix-store -q --valid-derivers "$outPath")" = "$drvPath2"
+
+# check that --valid-derivers returns nothing when there are no valid derivers
+nix-store --delete "$drvPath2"
+test -z "$(nix-store -q --valid-derivers "$outPath")"
diff --git a/tests/dyn-drv/dep-built-drv.sh b/tests/dyn-drv/dep-built-drv.sh
index 8c4a45e3b..c3daf2c59 100644
--- a/tests/dyn-drv/dep-built-drv.sh
+++ b/tests/dyn-drv/dep-built-drv.sh
@@ -6,4 +6,6 @@ out1=$(nix-build ./text-hashed-output.nix -A hello --no-out-link)
 
 clearStore
 
-expectStderr 1 nix-build ./text-hashed-output.nix -A wrapper --no-out-link | grepQuiet "Dependencies on the outputs of dynamic derivations are not yet supported"
+out2=$(nix-build ./text-hashed-output.nix -A wrapper --no-out-link)
+
+diff -r $out1 $out2
diff --git a/tests/dyn-drv/eval-outputOf.sh b/tests/dyn-drv/eval-outputOf.sh
index 99d917c06..9467feb8d 100644
--- a/tests/dyn-drv/eval-outputOf.sh
+++ b/tests/dyn-drv/eval-outputOf.sh
@@ -13,14 +13,14 @@ nix --experimental-features 'nix-command' eval --impure  --expr \
 # the future so it does work, but there are some design questions to
 # resolve first. Adding a test so we don't liberalise it by accident.
 expectStderr 1 nix --experimental-features 'nix-command dynamic-derivations' eval --impure --expr \
-    'builtins.outputOf (import ../dependencies.nix) "out"' \
+    'builtins.outputOf (import ../dependencies.nix {}) "out"' \
     | grepQuiet "value is a set while a string was expected"
 
 # Test that "DrvDeep" string contexts are not supported at this time
 #
 # Like the above, this is a restriction we could relax later.
 expectStderr 1 nix --experimental-features 'nix-command dynamic-derivations' eval --impure --expr \
-    'builtins.outputOf (import ../dependencies.nix).drvPath "out"' \
+    'builtins.outputOf (import ../dependencies.nix {}).drvPath "out"' \
     | grepQuiet "has a context which refers to a complete source and binary closure. This is not supported at this time"
 
 # Test using `builtins.outputOf` with static derivations
diff --git a/tests/dyn-drv/local.mk b/tests/dyn-drv/local.mk
index 0ce7cd37d..6b435499b 100644
--- a/tests/dyn-drv/local.mk
+++ b/tests/dyn-drv/local.mk
@@ -3,7 +3,8 @@ dyn-drv-tests := \
   $(d)/recursive-mod-json.sh \
   $(d)/build-built-drv.sh \
   $(d)/eval-outputOf.sh \
-  $(d)/dep-built-drv.sh
+  $(d)/dep-built-drv.sh \
+  $(d)/old-daemon-error-hack.sh
 
 install-tests-groups += dyn-drv
 
diff --git a/tests/dyn-drv/old-daemon-error-hack.nix b/tests/dyn-drv/old-daemon-error-hack.nix
new file mode 100644
index 000000000..c9d4a62d4
--- /dev/null
+++ b/tests/dyn-drv/old-daemon-error-hack.nix
@@ -0,0 +1,20 @@
+with import ./config.nix;
+
+# A simple content-addressed derivation.
+# The derivation can be arbitrarily modified by passing a different `seed`,
+# but the output will always be the same
+rec {
+  stub = mkDerivation {
+    name = "stub";
+    buildCommand = ''
+      echo stub > $out
+    '';
+  };
+  wrapper = mkDerivation {
+    name = "has-dynamic-drv-dep";
+    buildCommand = ''
+      exit 1 # we're not building this derivation
+      ${builtins.outputOf stub.outPath "out"}
+    '';
+  };
+}
diff --git a/tests/dyn-drv/old-daemon-error-hack.sh b/tests/dyn-drv/old-daemon-error-hack.sh
new file mode 100644
index 000000000..43b049973
--- /dev/null
+++ b/tests/dyn-drv/old-daemon-error-hack.sh
@@ -0,0 +1,11 @@
+# Purposely bypassing our usual common for this subgroup
+source ../common.sh
+
+# Need backend to support text-hashing too
+isDaemonNewer "2.18.0pre20230906" && skipTest "Daemon is too new"
+
+enableFeatures "ca-derivations dynamic-derivations"
+
+restartDaemon
+
+expectStderr 1 nix-instantiate --read-write-mode ./old-daemon-error-hack.nix | grepQuiet "the daemon is too old to understand dependencies on dynamic derivations"
diff --git a/tests/export-graph.nix b/tests/export-graph.nix
index fdac9583d..64fe36bd1 100644
--- a/tests/export-graph.nix
+++ b/tests/export-graph.nix
@@ -17,13 +17,13 @@ rec {
   foo."bar.runtimeGraph" = mkDerivation {
     name = "dependencies";
     builder = builtins.toFile "build-graph-builder" "${printRefs}";
-    exportReferencesGraph = ["refs" (import ./dependencies.nix)];
+    exportReferencesGraph = ["refs" (import ./dependencies.nix {})];
   };
 
   foo."bar.buildGraph" = mkDerivation {
     name = "dependencies";
     builder = builtins.toFile "build-graph-builder" "${printRefs}";
-    exportReferencesGraph = ["refs" (import ./dependencies.nix).drvPath];
+    exportReferencesGraph = ["refs" (import ./dependencies.nix {}).drvPath];
   };
 
 }
diff --git a/tests/lang/eval-okay-pathexists.nix b/tests/lang/eval-okay-pathexists.nix
index 50c28ee0c..e1246e370 100644
--- a/tests/lang/eval-okay-pathexists.nix
+++ b/tests/lang/eval-okay-pathexists.nix
@@ -1,4 +1,7 @@
-builtins.pathExists (builtins.toPath ./lib.nix)
+builtins.pathExists (./lib.nix)
+&& builtins.pathExists (builtins.toPath ./lib.nix)
+&& builtins.pathExists (builtins.toString ./lib.nix)
+&& !builtins.pathExists (builtins.toString ./lib.nix + "/")
 && builtins.pathExists (builtins.toPath (builtins.toString ./lib.nix))
 && !builtins.pathExists (builtins.toPath (builtins.toString ./bla.nix))
 && builtins.pathExists ./lib.nix
diff --git a/tests/remote-store.sh b/tests/remote-store.sh
index ea32a20d3..50e6f24b9 100644
--- a/tests/remote-store.sh
+++ b/tests/remote-store.sh
@@ -24,7 +24,7 @@ fi
   import (
     mkDerivation {
       name = "foo";
-      bla = import ./dependencies.nix;
+      bla = import ./dependencies.nix {};
       buildCommand = "
         echo \\\"hi\\\" > $out
       ";