I hate the thing too even though I made it, and rather just get rid of it. But we can't do that yet. In the meantime, this brings us more inline with autoconf and will make it slightly easier for me to write a pkg-config wrapper, which we need.
203 lines
6.3 KiB
Nix
203 lines
6.3 KiB
Nix
{ stdenv, buildEnv, writeText, pkgs, pkgsi686Linux }:
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{ name, profile ? ""
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, targetPkgs ? pkgs: [], multiPkgs ? pkgs: []
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, extraBuildCommands ? "", extraBuildCommandsMulti ? ""
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, extraOutputsToInstall ? []
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}:
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# HOWTO:
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# All packages (most likely programs) returned from targetPkgs will only be
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# installed once--matching the host's architecture (64bit on x86_64 and 32bit on
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# x86).
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#
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# Packages (most likely libraries) returned from multiPkgs are installed
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# once on x86 systems and twice on x86_64 systems.
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# On x86 they are merged with packages from targetPkgs.
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# On x86_64 they are added to targetPkgs and in addition their 32bit
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# versions are also installed. The final directory structure looks as
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# follows:
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# /lib32 will include 32bit libraries from multiPkgs
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# /lib64 will include 64bit libraries from multiPkgs and targetPkgs
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# /lib will link to /lib32
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let
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is64Bit = stdenv.hostPlatform.parsed.cpu.bits == 64;
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isMultiBuild = multiPkgs != null && is64Bit;
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isTargetBuild = !isMultiBuild;
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# list of packages (usually programs) which are only be installed for the
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# host's architecture
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targetPaths = targetPkgs pkgs ++ (if multiPkgs == null then [] else multiPkgs pkgs);
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# list of packages which are installed for both x86 and x86_64 on x86_64
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# systems
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multiPaths = multiPkgs pkgsi686Linux;
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# base packages of the chroot
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# these match the host's architecture, glibc_multi is used for multilib
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# builds. glibcLocales must be before glibc or glibc_multi as otherwiese
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# the wrong LOCALE_ARCHIVE will be used where only C.UTF-8 is available.
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basePkgs = with pkgs;
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[ glibcLocales
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(if isMultiBuild then glibc_multi else glibc)
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(toString gcc.cc.lib) bashInteractive coreutils less shadow su
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gawk diffutils findutils gnused gnugrep
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gnutar gzip bzip2 xz
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];
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baseMultiPkgs = with pkgsi686Linux;
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[ (toString gcc.cc.lib)
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];
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etcProfile = writeText "profile" ''
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export PS1='${name}-chrootenv:\u@\h:\w\$ '
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export LOCALE_ARCHIVE='/usr/lib/locale/locale-archive'
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export LD_LIBRARY_PATH="/run/opengl-driver/lib:/run/opengl-driver-32/lib:/usr/lib:/usr/lib32''${LD_LIBRARY_PATH:+:}$LD_LIBRARY_PATH"
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export PATH="/run/wrappers/bin:/usr/bin:/usr/sbin:$PATH"
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export TZDIR='/etc/zoneinfo'
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# Force compilers and other tools to look in default search paths
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unset NIX_ENFORCE_PURITY
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export NIX_CC_WRAPPER_TARGET_HOST_${stdenv.cc.suffixSalt}=1
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export NIX_CFLAGS_COMPILE='-idirafter /usr/include'
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export NIX_CFLAGS_LINK='-L/usr/lib -L/usr/lib32'
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export NIX_LDFLAGS='-L/usr/lib -L/usr/lib32'
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export PKG_CONFIG_PATH=/usr/lib/pkgconfig
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export ACLOCAL_PATH=/usr/share/aclocal
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${profile}
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'';
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# Compose /etc for the chroot environment
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etcPkg = stdenv.mkDerivation {
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name = "${name}-chrootenv-etc";
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buildCommand = ''
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mkdir -p $out/etc
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cd $out/etc
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# environment variables
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ln -s ${etcProfile} profile
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# compatibility with NixOS
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ln -s /host/etc/static static
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# symlink some NSS stuff
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ln -s /host/etc/passwd passwd
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ln -s /host/etc/group group
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ln -s /host/etc/shadow shadow
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ln -s /host/etc/hosts hosts
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ln -s /host/etc/resolv.conf resolv.conf
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ln -s /host/etc/nsswitch.conf nsswitch.conf
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# symlink sudo and su stuff
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ln -s /host/etc/login.defs login.defs
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ln -s /host/etc/sudoers sudoers
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ln -s /host/etc/sudoers.d sudoers.d
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# symlink other core stuff
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ln -s /host/etc/localtime localtime
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ln -s /host/etc/zoneinfo zoneinfo
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ln -s /host/etc/machine-id machine-id
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ln -s /host/etc/os-release os-release
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# symlink PAM stuff
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ln -s /host/etc/pam.d pam.d
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# symlink fonts stuff
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ln -s /host/etc/fonts fonts
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# symlink ALSA stuff
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ln -s /host/etc/asound.conf asound.conf
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# symlink SSL certs
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mkdir -p ssl
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ln -s /host/etc/ssl/certs ssl/certs
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# symlink /etc/mtab -> /proc/mounts (compat for old userspace progs)
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ln -s /proc/mounts mtab
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'';
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};
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# Composes a /usr-like directory structure
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staticUsrProfileTarget = buildEnv {
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name = "${name}-usr-target";
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paths = [ etcPkg ] ++ basePkgs ++ targetPaths;
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extraOutputsToInstall = [ "out" "lib" "bin" ] ++ extraOutputsToInstall;
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ignoreCollisions = true;
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};
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staticUsrProfileMulti = buildEnv {
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name = "${name}-usr-multi";
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paths = baseMultiPkgs ++ multiPaths;
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extraOutputsToInstall = [ "out" "lib" ] ++ extraOutputsToInstall;
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ignoreCollisions = true;
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};
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# setup library paths only for the targeted architecture
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setupLibDirs_target = ''
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# link content of targetPaths
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cp -rsHf ${staticUsrProfileTarget}/lib lib
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ln -s lib lib${if is64Bit then "64" else "32"}
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'';
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# setup /lib, /lib32 and /lib64
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setupLibDirs_multi = ''
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mkdir -m0755 lib32
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mkdir -m0755 lib64
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ln -s lib64 lib
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# copy glibc stuff
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cp -rsHf ${staticUsrProfileTarget}/lib/32/* lib32/ && chmod u+w -R lib32/
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# copy content of multiPaths (32bit libs)
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[ -d ${staticUsrProfileMulti}/lib ] && cp -rsHf ${staticUsrProfileMulti}/lib/* lib32/ && chmod u+w -R lib32/
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# copy content of targetPaths (64bit libs)
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cp -rsHf ${staticUsrProfileTarget}/lib/* lib64/ && chmod u+w -R lib64/
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# symlink 32-bit ld-linux.so
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ln -Ls ${staticUsrProfileTarget}/lib/32/ld-linux.so.2 lib/
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'';
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setupLibDirs = if isTargetBuild then setupLibDirs_target
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else setupLibDirs_multi;
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# the target profile is the actual profile that will be used for the chroot
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setupTargetProfile = ''
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mkdir -m0755 usr
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cd usr
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${setupLibDirs}
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for i in bin sbin share include; do
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if [ -d "${staticUsrProfileTarget}/$i" ]; then
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cp -rsHf "${staticUsrProfileTarget}/$i" "$i"
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fi
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done
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cd ..
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for i in var etc; do
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if [ -d "${staticUsrProfileTarget}/$i" ]; then
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cp -rsHf "${staticUsrProfileTarget}/$i" "$i"
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fi
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done
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for i in usr/{bin,sbin,lib,lib32,lib64}; do
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if [ -d "$i" ]; then
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ln -s "$i"
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fi
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done
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'';
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in stdenv.mkDerivation {
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name = "${name}-fhs";
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buildCommand = ''
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mkdir -p $out
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cd $out
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${setupTargetProfile}
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cd $out
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${extraBuildCommands}
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cd $out
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${if isMultiBuild then extraBuildCommandsMulti else ""}
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'';
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preferLocalBuild = true;
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allowSubstitutes = false;
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}
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