fix(tvix/glue): produce context for `builtins.(path|filterSource)` r/7850

Fixes b/392.

Output paths were created, depending on a plain store path but no
context string was attached to track that plain dependency.

Context string propagation tests are strengthened to prevent any
regression on this.

Change-Id: Ifd6671aeba6949324b0bb9f0f766b87db728d484
Signed-off-by: Ryan Lahfa <tvl@lahfa.xyz>
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11351
Reviewed-by: Alyssa Ross <hi@alyssa.is>
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>

1 files changed, 8 insertions, 0 deletions

diff --git a/tvix/glue/src/tests/tvix_tests/eval-okay-context-propagation.nix b/tvix/glue/src/tests/tvix_tests/eval-okay-context-propagation.nix
index 67f0ac46729b..918061b8b861 100644
--- a/tvix/glue/src/tests/tvix_tests/eval-okay-context-propagation.nix
+++ b/tvix/glue/src/tests/tvix_tests/eval-okay-context-propagation.nix
@@ -12,6 +12,11 @@ let
     system = "x86_64-linux";
     outputs = [ "out" "bar" ];
   };
+  a-path-drv = builtins.path {
+    name = "a-path-drv";
+    path = ./eval-okay-context-introspection.nix;
+  };
+  another-path-drv = builtins.filterSource (_: true) ./eval-okay-context-introspection.nix;
 
   # `substr` propagates context, we truncate to an empty string and concatenate to the target
   # to infect it with the context of `copied`.
@@ -37,6 +42,9 @@ in
   (builtins.hasContext "${(builtins.toFile "myself" "${./eval-okay-context-introspection.nix}")}")
   # `derivation` should produce context.
   (builtins.hasContext "${drv}")
+  # `builtins.path` / `builtins.filterSource` should produce context.
+  (builtins.hasContext "${a-path-drv}")
+  (builtins.hasContext "${another-path-drv}")
   # Low-level test to ensure that interpolation is working as expected.
   (builtins.length (builtins.attrNames (builtins.getContext "${drv}${other-drv}")) == 2)
   (builtins.getContext "${drv}${other-drv}" == mergeContext drv other-drv)