4b1cf5afb8
Changes:
* doesn't handle root user separately
* doesn't chdir("/") which makes using it seamless
* only bind mounts, doesn't symlink (i.e. files)
Incidentally, fixes #33106.
It's about two times shorter than the previous version, and much
easier to read/follow through. It uses GLib quite heavily, along with
RAII (available in GCC/Clang).
48 lines
1.2 KiB
Nix
48 lines
1.2 KiB
Nix
{ callPackage, runCommand, lib, writeScript, stdenv, coreutils }:
|
|
|
|
let buildFHSEnv = callPackage ./env.nix { }; in
|
|
|
|
args@{ name, runScript ? "bash", extraInstallCommands ? "", meta ? {}, passthru ? {}, ... }:
|
|
|
|
let
|
|
env = buildFHSEnv (removeAttrs args [ "runScript" "extraInstallCommands" "meta" "passthru" ]);
|
|
|
|
chrootenv = callPackage ./chrootenv {};
|
|
|
|
init = run: writeScript "${name}-init" ''
|
|
#! ${stdenv.shell}
|
|
for i in ${env}/* /host/*; do
|
|
path="/''${i##*/}"
|
|
[ -e "$path" ] || ${coreutils}/bin/ln -s "$i" "$path"
|
|
done
|
|
|
|
[ -d "$1" ] && [ -r "$1" ] && cd "$1"
|
|
shift
|
|
|
|
source /etc/profile
|
|
exec ${run} "$@"
|
|
'';
|
|
|
|
in runCommand name {
|
|
inherit meta;
|
|
passthru = passthru // {
|
|
env = runCommand "${name}-shell-env" {
|
|
shellHook = ''
|
|
exec ${chrootenv} ${init "bash"} "$(pwd)"
|
|
'';
|
|
} ''
|
|
echo >&2 ""
|
|
echo >&2 "*** User chroot 'env' attributes are intended for interactive nix-shell sessions, not for building! ***"
|
|
echo >&2 ""
|
|
exit 1
|
|
'';
|
|
};
|
|
} ''
|
|
mkdir -p $out/bin
|
|
cat <<EOF >$out/bin/${name}
|
|
#! ${stdenv.shell}
|
|
exec ${chrootenv} ${init runScript} "\$(pwd)" "\$@"
|
|
EOF
|
|
chmod +x $out/bin/${name}
|
|
${extraInstallCommands}
|
|
''
|