idris2: fix build on macOS (#89548)

The idris2 Makefile tries to use different versions of sed depending on
the OS, but nix always uses the same version. Because the version of
sed that is expected on macOS doesn't exist in the nix environment, the
build fails. Setting the OS to empty string resolves the issue.

1 files changed, 4 insertions, 3 deletions

diff --git a/pkgs/development/compilers/idris2/default.nix b/pkgs/development/compilers/idris2/default.nix
index 998a02633f2e..d2a071b61ddf 100644
--- a/pkgs/development/compilers/idris2/default.nix
+++ b/pkgs/development/compilers/idris2/default.nix
@@ -22,7 +22,8 @@ stdenv.mkDerivation rec {
     patchShebangs --build tests
   '';
 
-  makeFlags = [ "PREFIX=$(out)" ];
+  makeFlags = [ "PREFIX=$(out)" ]
+    ++ stdenv.lib.optional stdenv.isDarwin "OS=";
 
   # The name of the main executable of pkgs.chez is `scheme`
   buildFlags = [ "bootstrap-build" "SCHEME=scheme" ];
@@ -36,9 +37,9 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "A purely functional programming language with first class types";
-    homepage = https://github.com/idris-lang/Idris2;
+    homepage = "https://github.com/idris-lang/Idris2";
     license = stdenv.lib.licenses.bsd3;
     maintainers = with stdenv.lib.maintainers; [ wchresta ];
+    inherit (chez.meta) platforms;
   };
 }
-