golint: disable broken tests, normalize version

pkgs/development/tools/golint/default.nix

@@ -1,22 +1,27 @@
 { lib, buildGoModule, fetchgit }:
 
 buildGoModule rec {
-  pname = "lint";
-  version = "20201208-${lib.strings.substring 0 7 rev}";
-  rev = "83fdc39ff7b56453e3793356bcff3070b9b96445";
+  pname = "golint";
+  version = "unstable-2020-12-08";
 
   # we must allow references to the original `go` package, as golint uses
   # compiler go/build package to load the packages it's linting.
   allowGoReference = true;
 
   src = fetchgit {
-    inherit rev;
     url = "https://go.googlesource.com/lint";
+    rev = "83fdc39ff7b56453e3793356bcff3070b9b96445";
     sha256 = "sha256-g4Z9PREOxGoN7n/XhutawsITBznJlbz6StXeDYvOQ1c=";
   };
 
   vendorSha256 = "sha256-dPadFoymYu2Uw2AXZfbaBfxsN8IWMuK1TrcknHco3Bo=";
 
+  # tests no longer work:
+  # found packages pkg (4.go) and foo (blank-import-lib.go) in /build/lint-6edffad/testdata
+  # testdata/errorf-custom.go:9:2: cannot find package "." in:
+  #         /build/lint-6edffad/vendor/github.com/pkg/errors
+  doCheck = false;
+
   meta = with lib; {
     homepage = "https://golang.org";
     description = "Linter for Go source code";