haskell-generic-builder: allow use of 'env' attributes in nix-shell

We disabled this to prevent users from accidentally running nix-build on
an 'env' attribute, but in fact the ability to use those in combination
with "nix-shell -p" is quite useful, so the restriction is lifted.

1 files changed, 0 insertions, 6 deletions

diff --git a/pkgs/development/haskell-modules/generic-builder.nix b/pkgs/development/haskell-modules/generic-builder.nix
index 8474cab667c6..11bbe550b2d1 100644
--- a/pkgs/development/haskell-modules/generic-builder.nix
+++ b/pkgs/development/haskell-modules/generic-builder.nix
@@ -267,12 +267,6 @@ stdenv.mkDerivation ({
         export NIX_GHC_DOCDIR="${ghcEnv}/share/doc/ghc/html"
         export NIX_GHC_LIBDIR="${ghcEnv}/lib/${ghcEnv.name}"
       '';
-      buildCommand = ''
-        echo >&2 ""
-        echo >&2 "*** Haskell 'env' attributes are intended for interactive nix-shell sessions, not for building! ***"
-        echo >&2 ""
-        exit 1
-      '';
     };
 
   };