top-level/release-attrpaths-superset: remove __attrsFailEvaluation

This doesn't seem to be necessary anymore. I confirmed by:
- Adding a lib.warn into the __attrsFailsEvaluation branch - never got
any.
- Removing it everywhere and running full Eval on it - no errors, no
rebuilds.

pkgs/applications/editors/jetbrains/default.nix

@@ -431,8 +431,6 @@ rec {
     ];
   };
 
-  plugins = callPackage ./plugins { } // {
-    __attrsFailEvaluation = true;
-  };
+  plugins = callPackage ./plugins { };
 
 }

pkgs/applications/networking/instant-messengers/pidgin/pidgin-plugins/default.nix

@@ -18,12 +18,7 @@ lib.makeScope newScope (
       plugins = [ ];
     };
 
-    # Prevent `pkgs/top-level/release-attrpaths-superset.nix` from recursing here.
-    pidginPackages = self // {
-      pidginPackages = self.pidginPackages // {
-        __attrsFailEvaluation = true;
-      };
-    };
+    pidginPackages = self;
 
     pidgin-indicator = callPackage ./pidgin-indicator { };
 

pkgs/desktops/gnome/extensions/default.nix

@@ -39,7 +39,6 @@ let
     lib.trivial.pipe extensions [
       (map (extension: lib.nameValuePair extension.extensionUuid extension))
       builtins.listToAttrs
-      (attrs: attrs // { __attrsFailEvaluation = true; })
     ];
 
   # Map the list of extensions to an attrset based on the pname as key, which is more human readable than the UUID
@@ -80,7 +79,6 @@ rec {
 
   # Keep the last three versions in here
   gnomeExtensions = lib.trivial.pipe (gnome46Extensions // gnome47Extensions // gnome48Extensions) [
-    (v: builtins.removeAttrs v [ "__attrsFailEvaluation" ])
     # Apply some custom patches for automatically packaged extensions
     (callPackage ./extensionOverrides.nix { })
     # Add all manually packaged extensions

pkgs/development/compilers/rust/default.nix

@@ -89,12 +89,7 @@ in
       in
       {
         # Packages suitable for build-time, e.g. `build.rs`-type stuff.
-        buildRustPackages = (selectRustPackage pkgsBuildHost).packages.stable // {
-          # Prevent `pkgs/top-level/release-attrpaths-superset.nix` from recursing more than one level here.
-          buildRustPackages = self.buildRustPackages // {
-            __attrsFailEvaluation = true;
-          };
-        };
+        buildRustPackages = (selectRustPackage pkgsBuildHost).packages.stable;
         # Analogous to stdenv
         rustPlatform = makeRustPlatform self.buildRustPackages;
         rustc-unwrapped = self.callPackage ./rustc.nix ({

pkgs/development/haskell-modules/default.nix

@@ -31,12 +31,8 @@ let
       ghc
       extensible-self
       all-cabal-hashes
+      buildHaskellPackages
       ;
-
-    # Prevent `pkgs/top-level/release-attrpaths-superset.nix` from recursing here.
-    buildHaskellPackages = buildHaskellPackages // {
-      __attrsFailEvaluation = true;
-    };
   };
 
   platformConfigurations =

pkgs/development/interpreters/lua-5/default.nix

@@ -90,16 +90,7 @@ let
         inherit (luaPackages) requiredLuaModules;
       };
       withPackages = import ./with-packages.nix { inherit buildEnv luaPackages; };
-      pkgs =
-        let
-          lp = luaPackages;
-        in
-        lp
-        // {
-          luaPackages = lp.luaPackages // {
-            __attrsFailEvaluation = true;
-          };
-        };
+      pkgs = luaPackages;
       interpreter = "${self}/bin/${executable}";
       inherit executable luaversion;
       luaOnBuild = luaOnBuildForHost.override {

pkgs/development/interpreters/python/python-packages-base.nix

@@ -147,8 +147,5 @@ in
   python = toPythonModule python;
 
   # Don't take pythonPackages from "global" pkgs scope to avoid mixing python versions.
-  # Prevent `pkgs/top-level/release-attrpaths-superset.nix` from recursing more than one level here.
-  pythonPackages = self // {
-    __attrsFailEvaluation = true;
-  };
+  pythonPackages = self;
 }

pkgs/os-specific/bsd/freebsd/package-set.nix

@@ -21,9 +21,7 @@ lib.packagesFromDirectoryRecursive {
   inherit sourceData patchesRoot versionData;
 
   # Keep the crawled portion of Nixpkgs finite.
-  buildFreebsd = lib.dontRecurseIntoAttrs buildFreebsd // {
-    __attrsFailEvaluation = true;
-  };
+  buildFreebsd = lib.dontRecurseIntoAttrs buildFreebsd;
 
   ports = fetchgit {
     url = "https://git.FreeBSD.org/ports.git";

pkgs/top-level/all-packages.nix

@@ -170,7 +170,6 @@ with pkgs;
         system = stdenv.hostPlatform.system;
         callTest = config: config.test.driver;
       };
-      __attrsFailEvaluation = true;
     };
 
   ### BUILD SUPPORT
@@ -10099,15 +10098,11 @@ with pkgs;
 
   rstudioServerWrapper = rstudioWrapper.override { rstudio = rstudio-server; };
 
-  rPackages =
-    (dontRecurseIntoAttrs (
-      callPackage ../development/r-modules {
-        overrides = (config.rPackageOverrides or (_: { })) pkgs;
-      }
-    ))
-    // {
-      __attrsFailEvaluation = true;
-    };
+  rPackages = dontRecurseIntoAttrs (
+    callPackage ../development/r-modules {
+      overrides = (config.rPackageOverrides or (_: { })) pkgs;
+    }
+  );
 
   ### SERVERS
 

pkgs/top-level/beam-packages.nix

@@ -74,6 +74,4 @@ in
     erlang_27 = self.packagesWith self.interpreters.erlang_27;
     erlang_26 = self.packagesWith self.interpreters.erlang_26;
   };
-
-  __attrsFailEvaluation = true;
 }

pkgs/top-level/coq-packages.nix

@@ -29,7 +29,6 @@ let
     {
       inherit coq lib;
       coqPackages = self // {
-        __attrsFailEvaluation = true;
         recurseForDerivations = false;
       };
 

pkgs/top-level/cuda-packages.nix

@@ -70,7 +70,6 @@ let
     else
       pkgs.extend (
         final: _: {
-          __attrsFailEvaluation = true;
           recurseForDerivations = false;
           # The CUDA package set will be available as cudaPackages_x_y, so we need only update the aliases for the
           # minor-versioned and unversioned package sets.

pkgs/top-level/perl-packages.nix

@@ -36,11 +36,7 @@ with self;
 {
 
   inherit perl;
-  perlPackages = self // {
-    perlPackages = self.perlPackages // {
-      __attrsFailEvaluation = true;
-    };
-  };
+  perlPackages = self;
 
   # Check whether a derivation provides a perl module.
   hasPerlModule = drv: drv ? perlModule;

pkgs/top-level/release-attrpaths-superset.nix

@@ -30,31 +30,16 @@
 }:
 let
 
-  # __attrsFailEvaluation is a temporary workaround to get top-level
-  # eval to succeed (under builtins.tryEval) for the entire
-  # packageset, without deep invasve changes into individual
-  # packages.
-  #
-  # Now that CI has been added, ensuring that top-level eval will
-  # not be broken by any new commits, you should not add any new
-  # occurrences of __attrsFailEvaluation, and should remove them
-  # wherever you are able to (doing so will likely require deep
-  # adjustments within packages).  Once all of the uses of
-  # __attrsFailEvaluation are removed, it will be deleted from the
-  # routine below.  In the meantime,
-  #
   # The intended semantics are that an attrpath rooted at pkgs is
-  # part of the (unfiltered) release jobset iff all of the following
+  # part of the (unfiltered) release jobset iff both of the following
   # are true:
   #
   # 1. The attrpath leads to a value for which lib.isDerivation is true
   #
-  # 2. No proper prefix of the attrpath has __attrsFailEvaluation=true
-  #
-  # 3. Any proper prefix of the attrpath at which lib.isDerivation
+  # 2. Any proper prefix of the attrpath at which lib.isDerivation
   #    is true also has __recurseIntoDerivationForReleaseJobs=true.
   #
-  # The last condition is unfortunately necessary because there are
+  # The second condition is unfortunately necessary because there are
   # Hydra release jobnames which have proper prefixes which are
   # attrnames of derivations (!).  We should probably restructure
   # the job tree so that this is not the case.
@@ -81,8 +66,6 @@ let
 
         else if !(lib.isAttrs value) then
           [ ]
-        else if (value.__attrsFailEvaluation or false) then
-          [ ]
         else
           lib.pipe value [
             (builtins.mapAttrs (