nixpkgs/pkgs/development/compilers/nim/default.nix
Emery Hemingway 56592ea293 nim: cross-compilation fixes
* Import with callPackages
* Use buildPackages for building a cross-compiler
* Patch-out potential conflicts in nim.cfg
* Generate a configuration with toolchain detection
* Build with strictDeps enabled
2021-03-26 11:36:38 +01:00

322 lines
8.2 KiB
Nix

# https://nim-lang.github.io/Nim/packaging.html
# https://nim-lang.org/docs/nimc.html
{ lib, buildPackages, stdenv, fetchurl, fetchgit, fetchFromGitHub, makeWrapper
, openssl, pcre, readline, boehmgc, sqlite, nim-unwrapped }:
let
parseCpu = platform:
with platform;
# Derive a Nim CPU identifier
if isAarch32 then
"arm"
else if isAarch64 then
"arm64"
else if isAlpha then
"alpha"
else if isAvr then
"avr"
else if isMips && is32bit then
"mips"
else if isMips && is64bit then
"mips64"
else if isMsp430 then
"msp430"
else if isPowerPC && is32bit then
"powerpc"
else if isPowerPC && is64bit then
"powerpc64"
else if isRiscV && is64bit then
"riscv64"
else if isSparc then
"sparc"
else if isx86_32 then
"i386"
else if isx86_64 then
"amd64"
else
abort "no Nim CPU support known for ${config}";
parseOs = platform:
with platform;
# Derive a Nim OS identifier
if isAndroid then
"Android"
else if isDarwin then
"MacOSX"
else if isFreeBSD then
"FreeBSD"
else if isGenode then
"Genode"
else if isLinux then
"Linux"
else if isNetBSD then
"NetBSD"
else if isNone then
"Standalone"
else if isOpenBSD then
"OpenBSD"
else if isWindows then
"Windows"
else if isiOS then
"iOS"
else
abort "no Nim OS support known for ${config}";
parsePlatform = p: {
cpu = parseCpu p;
os = parseOs p;
};
nimHost = parsePlatform stdenv.hostPlatform;
nimTarget = parsePlatform stdenv.targetPlatform;
bootstrapCompiler = stdenv.mkDerivation rec {
pname = "nim-bootstrap";
version = "0.20.0";
src = fetchgit {
# A Git checkout is much smaller than a GitHub tarball.
url = "https://github.com/nim-lang/csources.git";
rev = "v${version}";
sha256 = "0i6vsfy1sgapx43n226q8m0pvn159sw2mhp50zm3hhb9zfijanis";
};
enableParallelBuilding = true;
installPhase = ''
runHook preInstall
install -Dt $out/bin bin/nim
runHook postInstall
'';
};
in {
nim-unwrapped = stdenv.mkDerivation rec {
pname = "nim-unwrapped";
version = "1.4.4";
strictDeps = true;
src = fetchurl {
url = "https://nim-lang.org/download/nim-${version}.tar.xz";
sha256 = "03k642nnjca0s6jlbn1v4jld51mbkix97jli4ky74gqlxyfp4wvd";
};
buildInputs = [ boehmgc openssl pcre readline sqlite ];
patches = [
./NIM_CONFIG_DIR.patch
# Override compiler configuration via an environmental variable
./nixbuild.patch
# Load libraries at runtime by absolute path
];
configurePhase = ''
runHook preConfigure
cp ${bootstrapCompiler}/bin/nim bin/
echo 'define:nixbuild' >> config/nim.cfg
runHook postConfigure
'';
kochArgs = [
"--cpu:${nimHost.cpu}"
"--os:${nimHost.os}"
"-d:release"
"-d:useGnuReadline"
] ++ lib.optional (stdenv.isDarwin || stdenv.isLinux) "-d:nativeStacktrace";
buildPhase = ''
runHook preBuild
local HOME=$TMPDIR
./bin/nim c koch
./koch boot $kochArgs --parallelBuild:$NIX_BUILD_CORES
./koch toolsNoExternal $kochArgs --parallelBuild:$NIX_BUILD_CORES
runHook postBuild
'';
installPhase = ''
runHook preInstall
install -Dt $out/bin bin/*
ln -sf $out/nim/bin/nim $out/bin/nim
./install.sh $out
runHook postInstall
'';
meta = with lib; {
description = "Statically typed, imperative programming language";
homepage = "https://nim-lang.org/";
license = licenses.mit;
maintainers = with maintainers; [ ehmry ];
};
};
nimble-unwrapped = stdenv.mkDerivation rec {
pname = "nimble-unwrapped";
version = "0.13.1";
strictDeps = true;
src = fetchFromGitHub {
owner = "nim-lang";
repo = "nimble";
rev = "v${version}";
sha256 = "1idb4r0kjbqv16r6bgmxlr13w2vgq5332hmnc8pjbxiyfwm075x8";
};
depsBuildBuild = [ nim-unwrapped ];
buildInputs = [ openssl ];
nimFlags = [ "--cpu:${nimHost.cpu}" "--os:${nimHost.os}" "-d:release" ];
buildPhase = ''
runHook preBuild
HOME=$NIX_BUILD_TOP nim c $nimFlags src/nimble
runHook postBuild
'';
installPhase = ''
runHook preBuild
install -Dt $out/bin src/nimble
runHook postBuild
'';
};
nim = let
nim' = buildPackages.nim-unwrapped;
nimble' = buildPackages.nimble-unwrapped;
inherit (stdenv) targetPlatform;
in stdenv.mkDerivation {
name = "${targetPlatform.config}-nim-wrapper-${nim'.version}";
inherit (nim') version;
preferLocalBuild = true;
strictDeps = true;
nativeBuildInputs = [ makeWrapper ];
patches = [
./nim.cfg.patch
# Remove configurations that clash with ours
];
unpackPhase = ''
runHook preUnpack
tar xf ${nim'.src} nim-$version/config
cd nim-$version
runHook postUnpack
'';
dontConfigure = true;
buildPhase =
# Configure the Nim compiler to use $CC and $CXX as backends
# The compiler is configured by two configuration files, each with
# a different DSL. The order of evaluation matters and that order
# is not documented, so duplicate the configuration across both files.
''
runHook preBuild
cat >> config/config.nims << WTF
switch("os", "${nimTarget.os}")
switch("cpu", "${nimTarget.cpu}")
switch("define", "nixbuild")
# Configure the compiler using the $CC set by Nix at build time
import strutils
let cc = getEnv"CC"
if cc.contains("gcc"):
switch("cc", "gcc")
elif cc.contains("clang"):
switch("cc", "clang")
WTF
mv config/nim.cfg config/nim.cfg.old
cat > config/nim.cfg << WTF
os = "${nimTarget.os}"
cpu = "${nimTarget.cpu}"
define:"nixbuild"
WTF
cat >> config/nim.cfg < config/nim.cfg.old
rm config/nim.cfg.old
cat >> config/nim.cfg << WTF
clang.cpp.exe %= "\$CXX"
clang.cpp.linkerexe %= "\$CXX"
clang.exe %= "\$CC"
clang.linkerexe %= "\$CC"
gcc.cpp.exe %= "\$CXX"
gcc.cpp.linkerexe %= "\$CXX"
gcc.exe %= "\$CC"
gcc.linkerexe %= "\$CC"
WTF
runHook postBuild
'';
wrapperArgs = [
"--prefix PATH : ${lib.makeBinPath [ buildPackages.gdb ]}:${
placeholder "out"
}/bin"
# Used by nim-gdb
"--prefix LD_LIBRARY_PATH : ${lib.makeLibraryPath [ openssl pcre ]}"
# These libraries may be referred to by the standard library.
# This is broken for cross-compilation because the package
# set will be shifted back by nativeBuildInputs.
"--set NIM_CONFIG_PATH ${placeholder "out"}/etc/nim"
# Use the custom configuration
''--set NIX_HARDENING_ENABLE "''${NIX_HARDENING_ENABLE/fortify}"''
# Fortify hardening appends -O2 to gcc flags which is unwanted for unoptimized nim builds.
];
installPhase = ''
runHook preInstall
mkdir -p $out/bin $out/etc
cp -r config $out/etc/nim
for binpath in ${nim'}/bin/nim?*; do
local binname=`basename $binpath`
makeWrapper \
$binpath $out/bin/${targetPlatform.config}-$binname \
$wrapperArgs
ln -s $out/bin/${targetPlatform.config}-$binname $out/bin/$binname
done
makeWrapper \
${nim'}/nim/bin/nim $out/bin/${targetPlatform.config}-nim \
$wrapperArgs
ln -s $out/bin/${targetPlatform.config}-nim $out/bin/nim
makeWrapper \
${nim'}/bin/testament $out/bin/${targetPlatform.config}-testament \
$wrapperArgs
ln -s $out/bin/${targetPlatform.config}-testament $out/bin/testament
makeWrapper \
${nimble'}/bin/nimble $out/bin/${targetPlatform.config}-nimble \
--suffix PATH : $out/bin
ln -s $out/bin/${targetPlatform.config}-nimble $out/bin/nimble
runHook postInstall
'';
passthru = {
nim = nim';
nimble = nimble';
};
meta = nim'.meta // {
description = nim'.meta.description
+ " (${targetPlatform.config} wrapper)";
platforms = with lib.platforms; unix ++ genode;
};
};
}