lix: fix installCheckPhase on Darwin

Set the build-test-env and build-test-shell Meson flags to ensure that
the BUILD_TEST_ENV and BUILD_TEST_SHELL environment variables are set,
as test_env_to_env depends on both of these variables [1].

[1]: https://git.lix.systems/lix-project/lix/commit/22b33b9d080f5220d399596790a5d69fe89add53

pkgs/tools/package-management/lix/common-lix.nix

@@ -24,6 +24,7 @@ assert lib.assertMsg (
   closureInfo,
   runCommand,
   meson,
+  bash,
   bison,
   boehmgc,
   boost,
@@ -35,6 +36,7 @@ assert lib.assertMsg (
   cargo,
   curl,
   cmake,
+  darwin,
   doxygen,
   editline,
   flex,
@@ -375,6 +377,19 @@ stdenv.mkDerivation (finalAttrs: {
         ))
         (lib.mesonOption "build-test-shell" "${pkgsStatic.bash}/bin")
       ]
+  ++
+    lib.optionals
+      (stdenv.hostPlatform.isDarwin && finalAttrs.doInstallCheck && lib.versionAtLeast version "2.95")
+      [
+        (lib.mesonOption "build-test-env" (
+          lib.makeBinPath [
+            darwin.file_cmds
+            darwin.shell_cmds
+            darwin.text_cmds
+          ]
+        ))
+        (lib.mesonOption "build-test-shell" "${bash}/bin")
+      ]
   ++ lib.optionals (lib.versionAtLeast version "2.95") [
     "--${
       if stdenv.hostPlatform != stdenv.buildPlatform then "cross" else "native"