default.nix: copy everything to the nix store before evaluating any of my config
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default.nix
64
default.nix
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@ -1,61 +1,5 @@
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# limited, non-flake interface to this repo.
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# this file exposes the same view into `pkgs` which the flake would see when evaluated.
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#
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# the primary purpose of this file is so i can run `updateScript`s which expect
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# the root to be `default.nix`
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{ }:
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{ ... }@args:
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let
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mkPkgs = args: (import ./pkgs/additional/nixpkgs args).extend
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(import ./overlays/all.nix);
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inherit (mkPkgs {}) lib;
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evalHost = { name, system, branch ? "master", variant ? null }:
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let
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pkgs = mkPkgs { inherit system; variant = branch; };
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in pkgs.nixos (
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[
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(import ./hosts/instantiate.nix { hostName = name; inherit variant; })
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(import ./modules)
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pkgs.sops-nix.nixosModules.sops
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]
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);
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mkFlavoredHost = args: let
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host = evalHost args;
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# expose the toplevel nixos system as the toplevel attribute itself,
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# with nested aliases for other common build targets
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in host.config.system.build.toplevel.overrideAttrs (base: {
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passthru = (base.passthru or {}) // {
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config = host.config;
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fs = host.config.sane.fs;
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img = host.config.system.build.img;
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pkgs = host.config.system.build.pkgs;
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programs = lib.mapAttrs (_: p: p.package) host.config.sane.programs;
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toplevel = host.config.system.build.toplevel; #< self
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};
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});
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mkHost = args: {
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# TODO: swap order: $host-{next,staging}-{min,light}:
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# then lexicographically-adjacent targets would also have the minimal difference in closure,
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# and the order in which each target should be built is more evident
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"${args.name}" = mkFlavoredHost args;
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"${args.name}-next" = mkFlavoredHost (args // { branch = "staging-next"; });
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"${args.name}-staging" = mkFlavoredHost (args // { branch = "staging"; });
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"${args.name}-light" = mkFlavoredHost (args // { variant = "light"; });
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"${args.name}-light-next" = mkFlavoredHost (args // { variant = "light"; branch = "staging-next"; });
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"${args.name}-light-staging" = mkFlavoredHost (args // { variant = "light"; branch = "staging"; });
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"${args.name}-min" = mkFlavoredHost (args // { variant = "min"; });
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"${args.name}-min-next" = mkFlavoredHost (args // { variant = "min"; branch = "staging-next"; });
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"${args.name}-min-staging" = mkFlavoredHost (args // { variant = "min"; branch = "staging-staging"; });
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};
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hosts = lib.foldl' (acc: host: acc // (mkHost host)) {} [
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{ name = "crappy"; system = "armv7l-linux"; }
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{ name = "desko"; system = "x86_64-linux"; }
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{ name = "lappy"; system = "x86_64-linux"; }
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{ name = "moby"; system = "aarch64-linux"; }
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{ name = "rescue"; system = "x86_64-linux"; }
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{ name = "servo"; system = "x86_64-linux"; }
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];
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in {
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inherit hosts;
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} // (mkPkgs {})
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sane-nix-files = import ./pkgs/additional/sane-nix-files { };
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in
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import "${sane-nix-files}/impure.nix" args
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62
impure.nix
Normal file
62
impure.nix
Normal file
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@ -0,0 +1,62 @@
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# this entry-point exposes all packages, hosts, etc, but with no purity guarnatees.
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# the intended way to use this is to first copy every .nix file and dependency in this repo to the nix store, then enter this file.
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# entering this file *before* copying anything into the nix store can cause interesting
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# race conditions or eval failures.
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#
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# see default.nix for a wrapper around this with better purity guarantees.
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{ }:
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let
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mkPkgs = args: (import ./pkgs/additional/nixpkgs args).extend
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(import ./overlays/all.nix);
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inherit (mkPkgs {}) lib;
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evalHost = { name, system, branch ? "master", variant ? null }:
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let
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pkgs = mkPkgs { inherit system; variant = branch; };
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in pkgs.nixos (
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[
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(import ./hosts/instantiate.nix { hostName = name; inherit variant; })
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(import ./modules)
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pkgs.sops-nix.nixosModules.sops
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]
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);
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mkFlavoredHost = args: let
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host = evalHost args;
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# expose the toplevel nixos system as the toplevel attribute itself,
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# with nested aliases for other common build targets
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in host.config.system.build.toplevel.overrideAttrs (base: {
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passthru = (base.passthru or {}) // {
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config = host.config;
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fs = host.config.sane.fs;
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img = host.config.system.build.img;
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pkgs = host.config.system.build.pkgs;
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programs = lib.mapAttrs (_: p: p.package) host.config.sane.programs;
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toplevel = host.config.system.build.toplevel; #< self
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};
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});
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mkHost = args: {
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# TODO: swap order: $host-{next,staging}-{min,light}:
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# then lexicographically-adjacent targets would also have the minimal difference in closure,
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# and the order in which each target should be built is more evident
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"${args.name}" = mkFlavoredHost args;
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"${args.name}-next" = mkFlavoredHost (args // { branch = "staging-next"; });
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"${args.name}-staging" = mkFlavoredHost (args // { branch = "staging"; });
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"${args.name}-light" = mkFlavoredHost (args // { variant = "light"; });
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"${args.name}-light-next" = mkFlavoredHost (args // { variant = "light"; branch = "staging-next"; });
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"${args.name}-light-staging" = mkFlavoredHost (args // { variant = "light"; branch = "staging"; });
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"${args.name}-min" = mkFlavoredHost (args // { variant = "min"; });
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"${args.name}-min-next" = mkFlavoredHost (args // { variant = "min"; branch = "staging-next"; });
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"${args.name}-min-staging" = mkFlavoredHost (args // { variant = "min"; branch = "staging-staging"; });
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};
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hosts = lib.foldl' (acc: host: acc // (mkHost host)) {} [
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{ name = "crappy"; system = "armv7l-linux"; }
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{ name = "desko"; system = "x86_64-linux"; }
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{ name = "lappy"; system = "x86_64-linux"; }
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{ name = "moby"; system = "aarch64-linux"; }
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{ name = "rescue"; system = "x86_64-linux"; }
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{ name = "servo"; system = "x86_64-linux"; }
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];
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in {
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inherit hosts;
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} // (mkPkgs {})
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@ -1,34 +1,54 @@
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{
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findutils,
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runCommandLocal,
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rsync,
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}:
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runCommandLocal "sane-nix-files" {
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nativeBuildInputs = [
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findutils
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rsync
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];
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{ stdenv ? null }:
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with builtins;
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let
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src = filterSource
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(path: type:
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let name = baseNameOf path;
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in !(
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# mimic .gitignore
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(name == ".working")
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|| (name == "result")
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|| (match "^result-.*" name != null)
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))
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../../../.
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;
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meta = {
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description = "top-level host configs for Colin's machines";
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longDescription = ''
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i like to ensure a copy of my config is present on all my machines,
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and this does that in a hermetic way.
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'';
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fakeDeriv = {
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# in the bootstrap path, we don't have enough available to actually
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# link these files into a derivation.
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# but that's ok, because the caller immediately `import`s it anyway,
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# so just yield something importable.
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outPath = src;
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};
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realDeriv = stdenv.mkDerivation {
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name = "sane-nix-files";
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inherit src;
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installPhase = ''
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ln -s "$src" "$out"
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'';
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dontFixup = true;
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};
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} ''
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mkdir src
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pushd src
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rsync -lptr ${../../../.}/ ./
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chmod u+w .
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for pat in $(cat .gitignore); do
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set +e
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chmod u+w -R "$pat" ; rm -rf "$pat"
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find $PWD -name "$pat" -exec 'chmod u+w -R {}; rm -rf {}' \;
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set -e
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done
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rsync -lptr ./ $out/
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# alternative implementation which always returns a real derivation,
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# but requires a pre-compiled statically-linked `sln` or `cp` implementation.
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# self = derivation {
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# name = "sane-nix-files";
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# system = "x86_64-linux";
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popd
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''
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# # builder = "${./sln}";
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# # args = [
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# # src
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# # self.outPath
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# # ];
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# builder = "/bin/sh";
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# args = [
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# "-c"
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# "${./sln} ${src} $out"
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# ];
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# };
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in
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if stdenv == null then
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fakeDeriv
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else
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realDeriv
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