From 88f22c34845ceb4dad42ed49ae0334a6bef1f6bf Mon Sep 17 00:00:00 2001
From: Tristan Konolige <tristan.konolige@gmail.com>
Date: Tue, 18 Dec 2018 17:53:18 -0700
Subject: mpich: Add darwin support

---
 pkgs/development/libraries/mpich/default.nix | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

(limited to 'pkgs/development/libraries/mpich/default.nix')

diff --git a/pkgs/development/libraries/mpich/default.nix b/pkgs/development/libraries/mpich/default.nix
index bab52e0fbe0..ffe6b5edf96 100644
--- a/pkgs/development/libraries/mpich/default.nix
+++ b/pkgs/development/libraries/mpich/default.nix
@@ -23,17 +23,18 @@ stdenv.mkDerivation  rec {
   doCheck = true;
 
   preFixup = ''
+    # Ensure the default compilers are the ones mpich was built with
+    sed -i 's:CC="gcc":CC=${stdenv.cc}/bin/gcc:' $out/bin/mpicc
+    sed -i 's:CXX="g++":CXX=${stdenv.cc}/bin/g++:' $out/bin/mpicxx
+    sed -i 's:FC="gfortran":FC=${gfortran}/bin/gfortran:' $out/bin/mpifort
+  ''
+  + stdenv.lib.optionalString (!stdenv.isDarwin) ''
     # /tmp/nix-build... ends up in the RPATH, fix it manually
     for entry in $out/bin/mpichversion $out/bin/mpivars; do
       echo "fix rpath: $entry"
       patchelf --set-rpath "$out/lib" $entry
     done
-
-    # Ensure the default compilers are the ones mpich was built with
-    sed -i 's:CC="gcc":CC=${stdenv.cc}/bin/gcc:' $out/bin/mpicc
-    sed -i 's:CXX="g++":CXX=${stdenv.cc}/bin/g++:' $out/bin/mpicxx
-    sed -i 's:FC="gfortran":FC=${gfortran}/bin/gfortran:' $out/bin/mpifort
-  '';
+    '';
 
   meta = with stdenv.lib; {
     description = "Implementation of the Message Passing Interface (MPI) standard";
@@ -49,6 +50,6 @@ stdenv.mkDerivation  rec {
       fullName = "MPICH license (permissive)";
     };
     maintainers = [ maintainers.markuskowa ];
-    platforms = platforms.linux;
+    platforms = platforms.linux ++ platforms.darwin;
   };
 }
-- 
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