forked from mirrors/nixpkgs
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).
49 lines
1.2 KiB
Nix
49 lines
1.2 KiB
Nix
{ callPackage, runCommand, lib, writeScript, stdenv, coreutils }:
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let buildFHSEnv = callPackage ./env.nix { }; in
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args@{ name, runScript ? "bash", extraInstallCommands ? "", meta ? {}, passthru ? {}, ... }:
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let
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env = buildFHSEnv (removeAttrs args [ "runScript" "extraInstallCommands" "meta" "passthru" ]);
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chrootenv = callPackage ./chrootenv {};
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init = run: writeScript "${name}-init" ''
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#! ${stdenv.shell}
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for i in ${env}/* /host/*; do
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path="/''${i##*/}"
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[ -e "$path" ] || ${coreutils}/bin/ln -s "$i" "$path"
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done
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[ -d "$1" ] && [ -r "$1" ] && cd "$1"
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shift
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source /etc/profile
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exec ${run} "$@"
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'';
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in runCommand name {
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inherit meta;
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passthru = passthru // {
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env = runCommand "${name}-shell-env" {
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shellHook = ''
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exec ${chrootenv} ${init "bash"} "$(pwd)"
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'';
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} ''
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echo >&2 ""
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echo >&2 "*** User chroot 'env' attributes are intended for interactive nix-shell sessions, not for building! ***"
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echo >&2 ""
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exit 1
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'';
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};
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} ''
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mkdir -p $out/bin
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cat <<EOF >$out/bin/${name}
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#! ${stdenv.shell}
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exec ${chrootenv} ${init runScript} "\$(pwd)" "\$@"
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EOF
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chmod +x $out/bin/${name}
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${extraInstallCommands}
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''
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