flakes: Ensure that `self.outPath == ./.`

Users expect `self` to refer to the directory where the `flake.nix`
file resides.

2 files changed, 80 insertions, 0 deletions

diff --git a/tests/flakes/inputs.sh b/tests/flakes/inputs.sh
new file mode 100644
index 000000000..d6269fc59
--- /dev/null
+++ b/tests/flakes/inputs.sh
@@ -0,0 +1,79 @@
+source ./common.sh
+
+requireGit
+
+
+test_subdir_self_path() {
+    baseDir=$TEST_ROOT/$RANDOM
+    flakeDir=$baseDir/b-low
+    mkdir -p $flakeDir
+    writeSimpleFlake $baseDir
+    writeSimpleFlake $flakeDir
+
+    echo all good > $flakeDir/message
+    cat > $flakeDir/flake.nix <<EOF
+{
+  outputs = inputs: rec {
+    packages.$system = rec {
+      default =
+        assert builtins.readFile ./message == "all good\n";
+        assert builtins.readFile (inputs.self + "/message") == "all good\n";
+        import ./simple.nix;
+    };
+  };
+}
+EOF
+    (
+        nix build $baseDir?dir=b-low --no-link
+    )
+}
+test_subdir_self_path
+
+
+test_git_subdir_self_path() {
+    repoDir=$TEST_ROOT/repo-$RANDOM
+    createGitRepo $repoDir
+    flakeDir=$repoDir/b-low
+    mkdir -p $flakeDir
+    writeSimpleFlake $repoDir
+    writeSimpleFlake $flakeDir
+
+    echo all good > $flakeDir/message
+    cat > $flakeDir/flake.nix <<EOF
+{
+  outputs = inputs: rec {
+    packages.$system = rec {
+      default =
+        assert builtins.readFile ./message == "all good\n";
+        assert builtins.readFile (inputs.self + "/message") == "all good\n";
+        import ./simple.nix;
+    };
+  };
+}
+EOF
+    (
+        cd $flakeDir
+        git add .
+        git commit -m init
+        # nix build
+    )
+
+    clientDir=$TEST_ROOT/client-$RANDOM
+    mkdir -p $clientDir
+    cat > $clientDir/flake.nix <<EOF
+{
+  inputs.inp = {
+    type = "git";
+    url = "file://$repoDir";
+    dir = "b-low";
+  };
+
+  outputs = inputs: rec {
+    packages = inputs.inp.packages;
+  };
+}
+EOF
+    nix build $clientDir --no-link
+
+}
+test_git_subdir_self_path
diff --git a/tests/local.mk b/tests/local.mk
index b3135fd4d..743dab35d 100644
--- a/tests/local.mk
+++ b/tests/local.mk
@@ -4,6 +4,7 @@ nix_tests = \
   flakes/mercurial.sh \
   flakes/circular.sh \
   flakes/init.sh \
+  flakes/inputs.sh \
   flakes/follow-paths.sh \
   flakes/bundle.sh \
   flakes/check.sh \