732495017b
This is a major closure size reduction on Darwin, and probably a less significant one on Linux. On darwin, retaining the compiler means adding clang and its dependency llvm to the perl closure, which gives us ~400MB of extra stuff. Considering that Nix itself depends on this version of perl, that makes cutting a new Nix release rather unpleasaont Darwin. After this patch, I was able to get the `nixUnstable` closure down to 21MB after feeding it into a .tar.xz (123MB before compression). There's still room for improvement but this should carry us over until we split outputs.
115 lines
4.0 KiB
Nix
115 lines
4.0 KiB
Nix
{ stdenv, fetchurl, enableThreading ? stdenv ? glibc }:
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# We can only compile perl with threading on platforms where we have a
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# real glibc in the stdenv.
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#
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# Instead of silently building an unthreaded perl if this is not the
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# case, we force callers to disableThreading explicitly, therefore
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# documenting the platforms where the perl is not threaded.
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#
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# In the case of stdenv linux boot stage1 it's not possible to use
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# threading because of the simpleness of the bootstrap glibc, so we
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# use enableThreading = false there.
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assert enableThreading -> (stdenv ? glibc);
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let
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libc = if stdenv.cc.libc or null != null then stdenv.cc.libc else "/usr";
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in
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with stdenv.lib;
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stdenv.mkDerivation rec {
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name = "perl-5.20.3";
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src = fetchurl {
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url = "mirror://cpan/authors/id/S/SH/SHAY/${name}.tar.gz";
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sha256 = "0jlvpd5l5nk7lzfd4akdg1sw6vinbkj6izclyyr0lrbidfky691m";
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};
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outputs = [ "out" "man" ];
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patches =
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[ # Do not look in /usr etc. for dependencies.
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./no-sys-dirs.patch
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]
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++ optional stdenv.isSunOS ./ld-shared.patch
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++ stdenv.lib.optional stdenv.isDarwin [ ./cpp-precomp.patch ];
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# There's an annoying bug on sandboxed Darwin in Perl's Cwd.pm where it looks for pwd
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# in /bin/pwd and /usr/bin/pwd and then falls back on just "pwd" if it can't get them
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# while at the same time erasing the PATH environment variable so it unconditionally
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# fails. The code in question is guarded by a check for Mac OS, but the patch below
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# doesn't have any runtime effect on other platforms.
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postPatch = stdenv.lib.optional stdenv.isDarwin ''
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pwd="$(type -P pwd)"
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substituteInPlace dist/PathTools/Cwd.pm \
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--replace "/bin/pwd" "$pwd"
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'';
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sandboxProfile = stdenv.lib.sandbox.allow "ipc-sysv-sem";
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# Build a thread-safe Perl with a dynamic libperls.o. We need the
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# "installstyle" option to ensure that modules are put under
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# $out/lib/perl5 - this is the general default, but because $out
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# contains the string "perl", Configure would select $out/lib.
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# Miniperl needs -lm. perl needs -lrt.
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configureFlags =
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[ "-de"
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"-Dcc=cc"
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"-Uinstallusrbinperl"
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"-Dinstallstyle=lib/perl5"
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"-Duseshrplib"
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"-Dlocincpth=${libc}/include"
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"-Dloclibpth=${libc}/lib"
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]
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++ optional stdenv.isSunOS "-Dcc=gcc"
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++ optional enableThreading "-Dusethreads";
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configureScript = "${stdenv.shell} ./Configure";
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dontAddPrefix = true;
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enableParallelBuilding = true;
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preConfigure =
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''
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configureFlags="$configureFlags -Dprefix=$out -Dman1dir=$out/share/man/man1 -Dman3dir=$out/share/man/man3"
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${optionalString stdenv.isArm ''
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configureFlagsArray=(-Dldflags="-lm -lrt")
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''}
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'' + optionalString stdenv.isDarwin ''
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substituteInPlace hints/darwin.sh --replace "env MACOSX_DEPLOYMENT_TARGET=10.3" ""
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'' + optionalString (!enableThreading) ''
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# We need to do this because the bootstrap doesn't have a static libpthread
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sed -i 's,\(libswanted.*\)pthread,\1,g' Configure
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'';
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preBuild = optionalString (!(stdenv ? cc && stdenv.cc.nativeTools))
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''
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# Make Cwd work on NixOS (where we don't have a /bin/pwd).
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substituteInPlace dist/PathTools/Cwd.pm --replace "'/bin/pwd'" "'$(type -tP pwd)'"
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'';
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# Inspired by nuke-references, which I can't depend on because it uses perl. Perhaps it should just use sed :)
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postInstall = ''
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self=$(echo $out | sed -n "s|^$NIX_STORE/\\([a-z0-9]\{32\}\\)-.*|\1|p")
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sed -i "/$self/b; s|$NIX_STORE/[a-z0-9]\{32\}-|$NIX_STORE/eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee-|g" "$out"/lib/perl5/*/*/Config.pm
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sed -i "/$self/b; s|$NIX_STORE/[a-z0-9]\{32\}-|$NIX_STORE/eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee-|g" "$out"/lib/perl5/*/*/Config_heavy.pl
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'';
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setupHook = ./setup-hook.sh;
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passthru.libPrefix = "lib/perl5/site_perl";
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meta = {
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homepage = https://www.perl.org/;
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description = "The standard implementation of the Perl 5 programmming language";
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maintainers = [ maintainers.eelco ];
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platforms = platforms.all;
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};
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}
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