revert(nix/utils): onlyDrvPath to get the drvPath w/o the outputs r/5274

This reverts commit 6813598c17959862734e5878d745e7dd8a197717.

Reason for revert: This function is a re-implementation of
builtins.unsafeDiscardOutputDependency which I missed at the time.

Change-Id: I5bb52bfd5e8d51defaf90ee795b0fe99be84f6db
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7265
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>

2 files changed, 0 insertions, 27 deletions

diff --git a/nix/utils/default.nix b/nix/utils/default.nix
index a29f346519b8..0c6c88fafd5a 100644
--- a/nix/utils/default.nix
+++ b/nix/utils/default.nix
@@ -43,21 +43,6 @@ let
     else builtins.throw "Don't know how to get (base)name of "
       + lib.generators.toPretty { } p;
 
-  /* Retrieves the drvPath attribute from a given derivation, but ensures that
-     the resulting string only depends on the `.drv` file in the nix store and
-     not on its realised outputs as well.
-
-     Type: drv -> string
-  */
-  onlyDrvPath = drv:
-    let
-      inherit (drv) drvPath;
-      unsafeDrvPath = builtins.unsafeDiscardStringContext drvPath;
-    in
-    builtins.appendContext unsafeDrvPath {
-      ${unsafeDrvPath} = { path = true; };
-    };
-
   /* Query the type of a path exposing the same information as would be by
      `builtins.readDir`, but for a single, specific target path.
 
@@ -167,7 +152,6 @@ in
 {
   inherit
     storePathName
-    onlyDrvPath
     pathType
     isDirectory
     isRegularFile
diff --git a/nix/utils/tests/default.nix b/nix/utils/tests/default.nix
index d5159a8433b4..344a1771d7d9 100644
--- a/nix/utils/tests/default.nix
+++ b/nix/utils/tests/default.nix
@@ -15,7 +15,6 @@ let
     isSymlink
     pathType
     storePathName
-    onlyDrvPath
     ;
 
   assertUtilsPred = msg: act: exp: [
@@ -92,19 +91,9 @@ let
       (storePathName cleanedSource)
       cleanedSource.name)
   ];
-
-  onlyDrvPathTests = it "correctly updates the string context of drvPath" [
-    (assertEq "onlyDrvPath only produces path dependencies"
-      (builtins.all
-        (dep: dep.path or false)
-        (builtins.attrValues
-          (builtins.getContext (onlyDrvPath depot.tools.cheddar))))
-      true)
-  ];
 in
 
 runTestsuite "nix.utils" [
   pathPredicates
   storePathNameTests
-  onlyDrvPathTests
 ]