testing: fix f2 NIX_BIN_DIR determination from meson

`nix.full_path()` is the *built* path, not the *installed* path. in the
sandbox this point to a location that contains *only* `nix`, not any of
the old-cli symlinks. any test that needs them in path would thus fail.

Change-Id: Ia651db8d1151a84f8d1b52e8993f6db61b0fe104

package.nix

@@ -606,8 +606,10 @@ stdenv.mkDerivation (finalAttrs: {
       mkdir -p $out/nix-support
       echo "doc internal-api-docs $out/share/doc/nix/internal-api/html" >> "$out/nix-support/hydra-build-products"
     ''
-    + ''
+    + lib.optionalString (sanitize == null) ''
       # Drop all references to libstd++ include files due to `__FILE__` leaking in libstd++ assertions.
+      # we do NOT want to do this during asan builds because it breaks the test suite! but as we do not
+      # actually want to ship asan builds in any reasonable capacity the leak will not matter that much
       find "$out" -type f -exec remove-references-to -t ${stdenv.cc.cc.stdenv.cc.cc} '{}' +
     '';
 

tests/functional2/meson.build

@@ -14,7 +14,7 @@ xdist_opts = [
 functional2_env = environment()
 # set the bin dir for us to know where to find the lix binaries for our declarative path
 # without leaking all of PATH or env
-functional2_env.set('NIX_BIN_DIR', fs.parent(nix.full_path()))
+functional2_env.set('NIX_BIN_DIR', bindir)
 if build_test_shell != ''
   functional2_env.set('BUILD_TEST_SHELL', build_test_shell)
 endif

tests/functional2/store/test_local_store.py

@@ -40,6 +40,5 @@ class TestLocalStore:
         assert info["trusted"]
 
     def test_doctor_shows_trust(self, nix: Nix):
-        # doctor wants nix-env on path, and the profile lookup test will *always* fail
-        result = nix.nix(["--store", "./x", "doctor"]).run().expect(2)
+        result = nix.nix(["--store", "./x", "doctor"]).run().ok()
         assert "You are trusted by" in result.stderr_plain