├── .github └── workflows │ └── update.yml ├── COPYING ├── call-flake.nix ├── default.nix └── flake.nix /.github/workflows/update.yml: -------------------------------------------------------------------------------- 1 | name: Update 2 | 3 | on: 4 | workflow_dispatch: 5 | schedule: 6 | - cron: '0 0 * * SUN' # every sunday 7 | 8 | jobs: 9 | update: 10 | name: Pull in latest call-flake from nixos/nix 11 | runs-on: ubuntu-latest 12 | steps: 13 | 14 | - name: Procure Nix 15 | uses: nixbuild/nix-quick-install-action@v22 16 | with: 17 | nix_conf: | 18 | experimental-features = nix-command flakes 19 | 20 | - name: Checkout 21 | uses: actions/checkout@v2 22 | with: 23 | ref: main 24 | path: call-flake 25 | 26 | - name: Checkout nixpkgs repo 27 | uses: actions/checkout@v2 28 | with: 29 | ref: master 30 | repository: NixOS/nix 31 | path: nix 32 | fetch-depth: 0 # complete history 33 | 34 | - name: Procure git-filter-repo from nixpkgs 35 | run: "nix profile install nixpkgs#git-filter-repo" 36 | 37 | 38 | - name: Filter nixos/nix on ./src/libexpr/flake/call-flake.nix 39 | run: | 40 | cd ./nix 41 | git filter-repo --path src/libexpr/flake/call-flake.nix --path-rename src/libexpr/flake/: --force 42 | 43 | - name: Update call-flake 44 | run: | 45 | cd ./call-flake 46 | git remote add other ../nix/ 47 | git fetch other master 48 | git config --local user.email "41898282+github-actions[bot]@users.noreply.github.com" 49 | git config --local user.name "github-actions[bot]" 50 | git merge -X theirs --allow-unrelated-histories other/master 51 | 52 | - name: Push changes 53 | uses: ad-m/github-push-action@master 54 | with: 55 | github_token: ${{ secrets.GITHUB_TOKEN }} 56 | directory: call-flake 57 | branch: main 58 | 59 | -------------------------------------------------------------------------------- /COPYING: -------------------------------------------------------------------------------- 1 | GNU LESSER GENERAL PUBLIC LICENSE 2 | Version 2.1, February 1999 3 | 4 | Copyright (C) 1991, 1999 Free Software Foundation, Inc. 5 | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 6 | Everyone is permitted to copy and distribute verbatim copies 7 | of this license document, but changing it is not allowed. 8 | 9 | [This is the first released version of the Lesser GPL. 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This is necessary for possibly unlocked inputs, in 9 | # particular the root input, but also --override-inputs pointing to 10 | # unlocked trees. 11 | overrides: 12 | 13 | let 14 | 15 | lockFile = builtins.fromJSON lockFileStr; 16 | 17 | # Resolve a input spec into a node name. An input spec is 18 | # either a node name, or a 'follows' path from the root 19 | # node. 20 | resolveInput = inputSpec: 21 | if builtins.isList inputSpec 22 | then getInputByPath lockFile.root inputSpec 23 | else inputSpec; 24 | 25 | # Follow an input path (e.g. ["dwarffs" "nixpkgs"]) from the 26 | # root node, returning the final node. 27 | getInputByPath = nodeName: path: 28 | if path == [] 29 | then nodeName 30 | else 31 | getInputByPath 32 | # Since this could be a 'follows' input, call resolveInput. 33 | (resolveInput lockFile.nodes.${nodeName}.inputs.${builtins.head path}) 34 | (builtins.tail path); 35 | 36 | allNodes = 37 | builtins.mapAttrs 38 | (key: node: 39 | let 40 | 41 | sourceInfo = 42 | if overrides ? ${key} 43 | then 44 | overrides.${key}.sourceInfo 45 | else 46 | # FIXME: remove obsolete node.info. 47 | fetchTree (node.info or {} // removeAttrs node.locked ["dir"]); 48 | 49 | subdir = overrides.${key}.dir or node.locked.dir or ""; 50 | 51 | outPath = sourceInfo + ((if subdir == "" then "" else "/") + subdir); 52 | 53 | flake = import (outPath + "/flake.nix"); 54 | 55 | inputs = builtins.mapAttrs 56 | (inputName: inputSpec: allNodes.${resolveInput inputSpec}) 57 | (node.inputs or {}); 58 | 59 | outputs = flake.outputs (inputs // { self = result; }); 60 | 61 | result = 62 | outputs 63 | # We add the sourceInfo attribute for its metadata, as they are 64 | # relevant metadata for the flake. However, the outPath of the 65 | # sourceInfo does not necessarily match the outPath of the flake, 66 | # as the flake may be in a subdirectory of a source. 67 | # This is shadowed in the next // 68 | // sourceInfo 69 | // { 70 | # This shadows the sourceInfo.outPath 71 | inherit outPath; 72 | 73 | inherit inputs; inherit outputs; inherit sourceInfo; _type = "flake"; 74 | }; 75 | 76 | in 77 | if node.flake or true then 78 | assert builtins.isFunction flake.outputs; 79 | result 80 | else 81 | sourceInfo 82 | ) 83 | lockFile.nodes; 84 | 85 | in allNodes.${lockFile.root} 86 | -------------------------------------------------------------------------------- /default.nix: -------------------------------------------------------------------------------- 1 | let 2 | callFlake = import ./call-flake.nix; 3 | in 4 | # ref can either be expressed as an attribute set or a path to source tree 5 | ref: let 6 | # if expressed as attribute set, a dir argument may be added to point to a subref 7 | dir = ref.dir or ""; 8 | src = 9 | if builtins.isPath ref || builtins.isString ref 10 | then { outPath = ref; } 11 | else builtins.fetchTree ( 12 | if builtins.isAttrs ref 13 | then builtins.removeAttrs ref ["dir"] 14 | else ref 15 | ); 16 | lockstr = let 17 | rootlock = "${src}/flake.lock"; 18 | sublock = "${src}/${dir}/flake.lock"; 19 | in 20 | if dir == "" && builtins.pathExists rootlock 21 | then builtins.readFile rootlock 22 | else if dir != "" && builtins.pathExists sublock 23 | then builtins.readFile sublock 24 | else 25 | builtins.toJSON { 26 | nodes.root = {}; 27 | root = "root"; 28 | }; 29 | in 30 | callFlake lockstr { root = { sourceInfo = src; subdir = dir; }; } 31 | -------------------------------------------------------------------------------- /flake.nix: -------------------------------------------------------------------------------- 1 | { 2 | outputs = inputs: let 3 | wrapper = import ./.; 4 | in { 5 | __functor = _: wrapper; 6 | }; 7 | } 8 | --------------------------------------------------------------------------------