270 lines
8.7 KiB
Nix
270 lines
8.7 KiB
Nix
{ lib
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, stdenv
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, runCommandLocal
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, buildEnv
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, writeText
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, writeShellScriptBin
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, pkgs
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, pkgsi686Linux
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}:
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{ profile ? ""
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, targetPkgs ? pkgs: []
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, multiPkgs ? pkgs: []
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, multiArch ? false # Whether to include 32bit packages
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, extraBuildCommands ? ""
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, extraBuildCommandsMulti ? ""
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, extraOutputsToInstall ? []
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, ... # for name, or pname+version
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} @ args:
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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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inherit (stdenv) is64bit;
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name = if (args ? pname && args ? version)
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then "${args.pname}-${args.version}"
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else args.name;
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# "use of glibc_multi is only supported on x86_64-linux"
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isMultiBuild = multiArch && stdenv.system == "x86_64-linux";
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isTargetBuild = !isMultiBuild;
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# list of packages (usually programs) which match the host's architecture
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# (which includes stuff from multiPkgs)
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targetPaths = targetPkgs pkgs ++ (if multiPkgs == null then [] else multiPkgs pkgs);
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# list of packages which are for x86 (only multiPkgs, only for x86_64 hosts)
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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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baseTargetPaths = 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)
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bashInteractiveFHS
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coreutils
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less
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shadow
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su
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gawk
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diffutils
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findutils
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gnused
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gnugrep
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gnutar
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gzip
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bzip2
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xz
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];
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baseMultiPaths = with pkgsi686Linux; [
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(toString gcc.cc.lib)
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];
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ldconfig = writeShellScriptBin "ldconfig" ''
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# due to a glibc bug, 64-bit ldconfig complains about patchelf'd 32-bit libraries, so we use 32-bit ldconfig when we have them
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exec ${if isMultiBuild then pkgsi686Linux.glibc.bin else pkgs.glibc.bin}/bin/ldconfig -f /etc/ld.so.conf -C /etc/ld.so.cache "$@"
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'';
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etcProfile = writeText "profile" ''
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export PS1='${name}-chrootenv:\u@\h:\w\$ '
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export LOCALE_ARCHIVE='/usr/lib/locale/locale-archive'
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export LD_LIBRARY_PATH="/run/opengl-driver/lib:/run/opengl-driver-32/lib''${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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# XDG_DATA_DIRS is used by pressure-vessel (steam proton) and vulkan loaders to find the corresponding icd
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export XDG_DATA_DIRS=$XDG_DATA_DIRS''${XDG_DATA_DIRS:+:}/run/opengl-driver/share:/run/opengl-driver-32/share
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# Following XDG spec [1], XDG_DATA_DIRS should default to "/usr/local/share:/usr/share".
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# In nix, it is commonly set without containing these values, so we add them as fallback.
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#
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# [1] <https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html>
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case ":$XDG_DATA_DIRS:" in
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*:/usr/local/share:*) ;;
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*) export XDG_DATA_DIRS="$XDG_DATA_DIRS''${XDG_DATA_DIRS:+:}/usr/local/share" ;;
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esac
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case ":$XDG_DATA_DIRS:" in
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*:/usr/share:*) ;;
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*) export XDG_DATA_DIRS="$XDG_DATA_DIRS''${XDG_DATA_DIRS:+:}/usr/share" ;;
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esac
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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_BINTOOLS_WRAPPER_TARGET_HOST_${stdenv.cc.suffixSalt}=1
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export NIX_CC_WRAPPER_TARGET_HOST_${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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# GStreamer searches for plugins relative to its real binary's location
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# https://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/bd97973ce0f2c5495bcda5cccd4f7ef7dcb7febc
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export GST_PLUGIN_SYSTEM_PATH_1_0=/usr/lib/gstreamer-1.0:/usr/lib32/gstreamer-1.0
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${profile}
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'';
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# Compose /etc for the chroot environment
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etcPkg = runCommandLocal "${name}-chrootenv-etc" { } ''
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mkdir -p $out/etc
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pushd $out/etc
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# environment variables
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ln -s ${etcProfile} profile
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# symlink /etc/mtab -> /proc/mounts (compat for old userspace progs)
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ln -s /proc/mounts mtab
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'';
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# Composes a /usr-like directory structure
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staticUsrProfileTarget = buildEnv {
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name = "${name}-usr-target";
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# ldconfig wrapper must come first so it overrides the original ldconfig
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paths = [ etcPkg ldconfig ] ++ baseTargetPaths ++ targetPaths;
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extraOutputsToInstall = [ "out" "lib" "bin" ] ++ extraOutputsToInstall;
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ignoreCollisions = true;
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postBuild = ''
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if [[ -d $out/share/gsettings-schemas/ ]]; then
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# Recreate the standard schemas directory if its a symlink to make it writable
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if [[ -L $out/share/glib-2.0 ]]; then
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target=$(readlink $out/share/glib-2.0)
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rm $out/share/glib-2.0
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mkdir $out/share/glib-2.0
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ln -fs $target/* $out/share/glib-2.0
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fi
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if [[ -L $out/share/glib-2.0/schemas ]]; then
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target=$(readlink $out/share/glib-2.0/schemas)
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rm $out/share/glib-2.0/schemas
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mkdir $out/share/glib-2.0/schemas
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ln -fs $target/* $out/share/glib-2.0/schemas
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fi
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mkdir -p $out/share/glib-2.0/schemas
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for d in $out/share/gsettings-schemas/*; do
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# Force symlink, in case there are duplicates
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ln -fs $d/glib-2.0/schemas/*.xml $out/share/glib-2.0/schemas
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ln -fs $d/glib-2.0/schemas/*.gschema.override $out/share/glib-2.0/schemas
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done
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# and compile them
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${pkgs.glib.dev}/bin/glib-compile-schemas $out/share/glib-2.0/schemas
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fi
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'';
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};
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staticUsrProfileMulti = buildEnv {
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name = "${name}-usr-multi";
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paths = baseMultiPaths ++ 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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setupLibDirsTarget = ''
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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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setupLibDirsMulti = ''
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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/
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chmod u+w -R lib32/
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# copy content of multiPaths (32bit libs)
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if [ -d ${staticUsrProfileMulti}/lib ]; then
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cp -rsHf ${staticUsrProfileMulti}/lib/* lib32/
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chmod u+w -R lib32/
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fi
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# copy content of targetPaths (64bit libs)
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cp -rsHf ${staticUsrProfileTarget}/lib/* lib64/
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chmod u+w -R lib64/
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# symlink 32-bit ld-linux.so
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ln -Ls ${staticUsrProfileTarget}/lib/32/ld-linux.so.2 lib/
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'';
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setupLibDirs = if isTargetBuild
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then setupLibDirsTarget
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else setupLibDirsMulti;
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# the target profile is the actual profile that will be used for the chroot
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setupTargetProfile = ''
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mkdir -m0755 usr
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pushd usr
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${setupLibDirs}
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'' + lib.optionalString isMultiBuild ''
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if [ -d "${staticUsrProfileMulti}/share" ]; then
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cp -rLf ${staticUsrProfileMulti}/share share
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fi
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'' + ''
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if [ -d "${staticUsrProfileTarget}/share" ]; then
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if [ -d share ]; then
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chmod -R 755 share
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cp -rLTf ${staticUsrProfileTarget}/share share
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else
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cp -rsHf ${staticUsrProfileTarget}/share share
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fi
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fi
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for i in bin sbin include; do
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if [ -d "${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 opt; 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 "$i"
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fi
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done
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popd
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'';
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in runCommandLocal "${name}-fhs" {
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passthru = {
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inherit args baseTargetPaths targetPaths baseMultiPaths ldconfig isMultiBuild;
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};
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} ''
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mkdir -p $out
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pushd $out
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${setupTargetProfile}
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${extraBuildCommands}
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${lib.optionalString isMultiBuild extraBuildCommandsMulti}
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''
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