tjh.dev
pmix: split output -> out, dev
This reduces the run time closure from 334 MB to 37.8 MB,
mainly by removing gcc from the closure:
nix path-info -hS
/nix/store/jddsvgvf0ayj5x1df9yaa74lhaz6sjz2-pmix-5.0.1 4.1M 334.2M
/nix/store/n6p56psvwpj419f6cjbdlyiri1mv498f-pmix-5.0.1 2.7M 37.8M
+28
-1
pkgs/development/libraries/pmix/default.nix
+28
-1
pkgs/development/libraries/pmix/default.nix
···
1
1
{ lib, stdenv, fetchFromGitHub, perl, autoconf, automake
2
-
, libtool, python3, flex, libevent, hwloc, munge, zlib, pandoc, gitMinimal
2
+
, removeReferencesTo, libtool, python3, flex, libevent
3
+
, targetPackages, makeWrapper
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+
, hwloc, munge, zlib, pandoc, gitMinimal
3
5
} :
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stdenv.mkDerivation rec {
···
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fetchSubmodules = true;
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};
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+
outputs = [ "out" "dev" ];
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+
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postPatch = ''
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patchShebangs ./autogen.pl
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patchShebangs ./config
···
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32
flex
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gitMinimal
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python3
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+
removeReferencesTo
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+
makeWrapper
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];
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buildInputs = [ libevent hwloc munge zlib ];
···
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postInstall = ''
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find $out/lib/ -name "*.la" -exec rm -f \{} \;
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+
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+
moveToOutput "bin/pmix_info" "''${!outputDev}"
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+
moveToOutput "bin/pmixcc" "''${!outputDev}"
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+
moveToOutput "share/pmix/pmixcc-wrapper-data.txt" "''${!outputDev}"
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+
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+
# The path to the pmixcc-wrapper-data.txt is hard coded and
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# points to $out instead of dev. Use wrapper to fix paths.
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+
wrapProgram $dev/bin/pmixcc \
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+
--set PMIX_INCLUDEDIR $dev/include \
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+
--set PMIX_PKGDATADIR $dev/share/pmix
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+
'';
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+
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+
postFixup = ''
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+
# The build info (parameters to ./configure) are hardcoded
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+
# into the library. This clears all references to $dev/include.
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+
remove-references-to -t $dev $(readlink -f $out/lib/libpmix.so)
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+
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+
# Pin the compiler to the current version in a cross compiler friendly way.
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+
# Same pattern as for openmpi (see https://github.com/NixOS/nixpkgs/pull/58964#discussion_r275059427).
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+
sed -i 's:compiler=.*:compiler=${targetPackages.stdenv.cc}/bin/${targetPackages.stdenv.cc.targetPrefix}cc:' \
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$dev/share/pmix/pmixcc-wrapper-data.txt
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'';
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enableParallelBuilding = true;