diff options
Diffstat (limited to 'modules/build-tarball.nix')
| -rw-r--r-- | modules/build-tarball.nix | 177 |
1 files changed, 80 insertions, 97 deletions
diff --git a/modules/build-tarball.nix b/modules/build-tarball.nix index d2e5231..f48c9ce 100644 --- a/modules/build-tarball.nix +++ b/modules/build-tarball.nix @@ -1,112 +1,95 @@ { config, pkgs, lib, ... }: with builtins; with lib; let - cfg = config.wsl.tarball; - - pkgs2storeContents = l: map (x: { object = x; symlink = "none"; }) l; - - nixpkgs = lib.cleanSource pkgs.path; - - channelSources = pkgs.runCommand "nixos-${config.system.nixos.version}" - { preferLocalBuild = true; } - '' - mkdir -p $out - cp -prd ${nixpkgs.outPath} $out/nixos - chmod -R u+w $out/nixos - if [ ! -e $out/nixos/nixpkgs ]; then - ln -s . $out/nixos/nixpkgs - fi - echo -n ${toString config.system.nixos.revision} > $out/nixos/.git-revision - echo -n ${toString config.system.nixos.versionSuffix} > $out/nixos/.version-suffix - echo ${toString config.system.nixos.versionSuffix} | sed -e s/pre// > $out/nixos/svn-revision - ''; - - preparer = pkgs.writeShellScriptBin "wsl-prepare" ('' - set -e - - mkdir -m 0755 ./bin ./etc - mkdir -m 1777 ./tmp - - # WSL requires a /bin/sh - only temporary, NixOS's activate will overwrite - ln -s ${config.users.users.root.shell} ./bin/sh - - # WSL also requires a /bin/mount, otherwise the host fs isn't accessible - ln -s /nix/var/nix/profiles/system/sw/bin/mount ./bin/mount - - # Set system profile - system=${config.system.build.toplevel} - ./$system/sw/bin/nix-store --store `pwd` --load-db < ./nix-path-registration - rm ./nix-path-registration - ./$system/sw/bin/nix-env --store `pwd` -p ./nix/var/nix/profiles/system --set $system - - # Set channel - mkdir -p ./nix/var/nix/profiles/per-user/root - ./$system/sw/bin/nix-env --store `pwd` -p ./nix/var/nix/profiles/per-user/root/channels --set ${channelSources} - mkdir -m 0700 -p ./root/.nix-defexpr - ln -s /nix/var/nix/profiles/per-user/root/channels ./root/.nix-defexpr/channels - - # It's now a NixOS! - touch ./etc/NIXOS - - # Write wsl.conf so that it is present when NixOS is started for the first time - cp ${config.environment.etc."wsl.conf".source} ./etc/wsl.conf - - '' + lib.optionalString cfg.includeConfig '' - ${if cfg.configPath == null then '' - # Copy the system configuration - mkdir -p ./etc/nixos/nixos-wsl - cp -R ${lib.cleanSource ../.}/. ./etc/nixos/nixos-wsl - mv ./etc/nixos/nixos-wsl/configuration.nix ./etc/nixos/configuration.nix - # Patch the import path to avoid having a flake.nix in /etc/nixos - sed -i 's|import \./default\.nix|import \./nixos-wsl|' ./etc/nixos/configuration.nix - '' else '' - mkdir -p ./etc/nixos - cp -R ${lib.cleanSource cfg.configPath}/. ./etc/nixos - ''} - chmod -R u+w etc/nixos - ''); + cfg = config.wsl; -in -{ - - options.wsl.tarball = { - includeConfig = mkOption { - type = types.bool; - default = true; - description = "Whether or not to copy the system configuration into the tarball"; - }; - - configPath = mkOption { - type = types.nullOr types.path; - default = null; - description = "Path to system configuration which is copied into the tarball"; - }; - }; + defaultConfig = pkgs.writeText "default-configuration.nix" '' + # Edit this configuration file to define what should be installed on + # your system. Help is available in the configuration.nix(5) man page, on + # https://search.nixos.org/options and in the NixOS manual (`nixos-help`). + # NixOS-WSL specific options are documented on the NixOS-WSL repository: + # https://github.com/nix-community/NixOS-WSL - config = mkIf config.wsl.enable { - # These options make no sense without the wsl-distro module anyway + { config, lib, pkgs, ... }: - system.build.tarball = pkgs.callPackage "${nixpkgs}/nixos/lib/make-system-tarball.nix" { - - contents = [ - { source = config.users.users.root.shell; target = "/nix/nixos-wsl/entrypoint"; } + { + imports = [ + # include NixOS-WSL modules + <nixos-wsl/modules> ]; - fileName = "nixos-wsl-${pkgs.hostPlatform.system}"; + wsl.enable = true; + wsl.defaultUser = "nixos"; + ${cfg.extraTarballConfig} + + # This value determines the NixOS release from which the default + # settings for stateful data, like file locations and database versions + # on your system were taken. It's perfectly fine and recommended to leave + # this value at the release version of the first install of this system. + # Before changing this value read the documentation for this option + # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html). + system.stateVersion = "${config.system.nixos.release}"; # Did you read the comment? + } + ''; +in +{ + options.wsl.extraTarballConfig = mkOption { + type = types.str; + internal = true; + default = ""; + }; - storeContents = pkgs2storeContents [ - config.system.build.toplevel - channelSources - preparer - ]; + # These options make no sense without the wsl-distro module anyway + config = mkIf cfg.enable { + system.build.tarballBuilder = pkgs.writeShellApplication { + name = "nixos-wsl-tarball-builder"; - extraCommands = "${preparer}/bin/wsl-prepare"; + runtimeInputs = [ + pkgs.coreutils + pkgs.gnutar + pkgs.nixos-install-tools + config.nix.package + ]; - # Use gzip - compressCommand = "gzip"; - compressionExtension = ".gz"; + text = '' + if ! [ $EUID -eq 0 ]; then + echo "This script must be run as root!" + exit 1 + fi + + out=''${1:-nixos-wsl.tar.gz} + + root=$(mktemp -p "''${TMPDIR:-/tmp}" -d nixos-wsl-tarball.XXXXXXXXXX) + # FIXME: fails in CI for some reason, but we don't really care because it's CI + trap 'rm -rf "$root" || true' INT TERM EXIT + + chmod o+rx "$root" + + echo "[NixOS-WSL] Installing..." + nixos-install \ + --root "$root" \ + --no-root-passwd \ + --system ${config.system.build.toplevel} \ + --substituters "" + + echo "[NixOS-WSL] Adding channel..." + nixos-enter --root "$root" --command 'nix-channel --add https://github.com/nix-community/NixOS-WSL/archive/refs/heads/main.tar.gz nixos-wsl' + + echo "[NixOS-WSL] Adding default config..." + install -Dm644 ${defaultConfig} "$root/etc/nixos/configuration.nix" + + echo "[NixOS-WSL] Compressing..." + tar -C "$root" \ + -cz \ + --sort=name \ + --mtime='@1' \ + --owner=0 \ + --group=0 \ + --numeric-owner \ + . \ + > "$out" + ''; }; - }; } |