+5 -4

README.md

··· 11 11 12 12 - [unflake](https://github.com/vic/dendritic-unflake/tree/main) 13 13 - [npins](https://github.com/vic/dendritic-unflake/tree/npins) 14 14 - - [builtins](https://github.com/vic/dendritic-unflake/tree/builtins) 14 14 + - [builtins](https://github.com/vic/dendritic-unflake/tree/builtins) **current** 15 15 - [froyo](https://github.com/vic/dendritic-unflake/tree/froyo) 16 16 - - [falake](https://github.com/vic/dendritic-unflake/tree/falake) **current** 16 16 + - [falake](https://github.com/vic/dendritic-unflake/tree/falake) 17 17 - [flake-parts](https://github.com/vic/dendritic-unflake/tree/flake-parts) 18 18 19 19 - # Dendritic Falake 19 19 + 20 20 + # Dendritic stable-nix 20 21 21 22 This repository serves as an example Dendritic Nix implementation **without** flakes nor flake-parts. 22 23 ([discourse post](https://discourse.nixos.org/t/dendritic-unflake-example-dendritic-setup-without-flakes-nor-flake-parts/73069/5) and [context](https://github.com/mightyiam/dendritic/pull/15)) ··· 24 25 Entry point is [default.nix](default.nix), [modules/example.nix](modules/example.nix) defines a nixosConfiguration. 25 26 26 27 27 27 - This example uses [falake](https://codeberg.org/FrdrCkII/falake) top-level modules. 28 28 + This example uses `builtins.fetchGit` to fetch dependencies and [with-inputs.nix](with-inputs.nix) to provide flake-like inputs. 28 29 29 30 30 31 ## Usage

+18 -9

default.nix

··· 1 1 let 2 2 - pins = import ./npins; 3 3 - inherit (pins) nixpkgs falake; 4 4 - pkgs = import nixpkgs { }; 2 2 + 3 3 + modules = 4 4 + { inputs, ... }: 5 5 + { 6 6 + imports = [ (inputs.import-tree ./modules) ]; 7 7 + }; 8 8 + 9 9 + outputs = 10 10 + inputs: 11 11 + (inputs.nixpkgs.lib.evalModules { 12 12 + modules = [ modules ]; 13 13 + specialArgs = { 14 14 + inherit inputs; 15 15 + inherit (inputs) self; 16 16 + }; 17 17 + }).config; 18 18 + 5 19 in 6 6 - (import falake).mkFalake pkgs.lib { inherit pins; } { 7 7 - inherit nixpkgs; 8 8 - imports = [ 9 9 - (import pins.import-tree ./modules) 10 10 - ]; 11 11 - } 20 20 + import ./with-inputs.nix outputs

+6 -6

modules/example.nix

··· 1 1 - { pins, config, ... }: 1 1 + { lib, self, ... }: 2 2 { 3 3 - flake.modules.nixos.no-boot = { 3 3 + modules.nixos.no-boot = { 4 4 boot.loader.grub.enable = false; 5 5 fileSystems."/".device = "/dev/no-device"; 6 6 }; 7 7 8 8 - flake.modules.nixos.statics = { 8 8 + modules.nixos.statics = { 9 9 system.stateVersion = "25.11"; 10 10 nixpkgs.hostPlatform = "x86_64-linux"; 11 11 passthru = { }; 12 12 }; 13 13 14 14 - flake.modules.nixos.my-laptop.imports = with config.flake.modules.nixos; [ 14 14 + modules.nixos.my-laptop.imports = with self.modules.nixos; [ 15 15 statics 16 16 no-boot 17 17 ]; 18 18 19 19 - flake.nixosConfigurations.my-laptop = import "${pins.nixpkgs}/nixos/lib/eval-config.nix" { 20 20 - modules = [ config.flake.modules.nixos.my-laptop ]; 19 19 + nixosConfigurations.my-laptop = lib.nixosSystem { 20 20 + modules = [ self.modules.nixos.my-laptop ]; 21 21 }; 22 22 }

+6 -2

modules/options/modules.nix

··· 1 1 - { pins, ... }: 1 1 + { lib, ... }: 2 2 { 3 3 - imports = [ (import pins.falake).flakeModules.modules ]; 3 3 + options.modules = lib.mkOption { 4 4 + description = "<class>.<aspect> modules. akin to flake-parts' flake.modules"; 5 5 + default = { }; 6 6 + type = lib.types.lazyAttrsOf (lib.types.lazyAttrsOf lib.types.deferredModule); 7 7 + }; 4 8 }

+8

modules/options/nixos-configurations.nix

··· 1 1 + { lib, ... }: 2 2 + { 3 3 + options.nixosConfigurations = lib.mkOption { 4 4 + description = "NixOS configurations"; 5 5 + default = { }; 6 6 + type = lib.types.lazyAttrsOf lib.types.raw; 7 7 + }; 8 8 + }

-146

npins/default.nix

··· 1 1 - /* 2 2 - This file is provided under the MIT licence: 3 3 - 4 4 - Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: 5 5 - 6 6 - The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. 7 7 - 8 8 - THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 9 9 - */ 10 10 - # Generated by npins. Do not modify; will be overwritten regularly 11 11 - let 12 12 - data = builtins.fromJSON (builtins.readFile ./sources.json); 13 13 - version = data.version; 14 14 - 15 15 - # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/lists.nix#L295 16 16 - range = 17 17 - first: last: if first > last then [ ] else builtins.genList (n: first + n) (last - first + 1); 18 18 - 19 19 - # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/strings.nix#L257 20 20 - stringToCharacters = s: map (p: builtins.substring p 1 s) (range 0 (builtins.stringLength s - 1)); 21 21 - 22 22 - # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/strings.nix#L269 23 23 - stringAsChars = f: s: concatStrings (map f (stringToCharacters s)); 24 24 - concatMapStrings = f: list: concatStrings (map f list); 25 25 - concatStrings = builtins.concatStringsSep ""; 26 26 - 27 27 - # If the environment variable NPINS_OVERRIDE_${name} is set, then use 28 28 - # the path directly as opposed to the fetched source. 29 29 - # (Taken from Niv for compatibility) 30 30 - mayOverride = 31 31 - name: path: 32 32 - let 33 33 - envVarName = "NPINS_OVERRIDE_${saneName}"; 34 34 - saneName = stringAsChars (c: if (builtins.match "[a-zA-Z0-9]" c) == null then "_" else c) name; 35 35 - ersatz = builtins.getEnv envVarName; 36 36 - in 37 37 - if ersatz == "" then 38 38 - path 39 39 - else 40 40 - # this turns the string into an actual Nix path (for both absolute and 41 41 - # relative paths) 42 42 - builtins.trace "Overriding path of \"${name}\" with \"${ersatz}\" due to set \"${envVarName}\"" ( 43 43 - if builtins.substring 0 1 ersatz == "/" then 44 44 - /. + ersatz 45 45 - else 46 46 - /. + builtins.getEnv "PWD" + "/${ersatz}" 47 47 - ); 48 48 - 49 49 - mkSource = 50 50 - name: spec: 51 51 - assert spec ? type; 52 52 - let 53 53 - path = 54 54 - if spec.type == "Git" then 55 55 - mkGitSource spec 56 56 - else if spec.type == "GitRelease" then 57 57 - mkGitSource spec 58 58 - else if spec.type == "PyPi" then 59 59 - mkPyPiSource spec 60 60 - else if spec.type == "Channel" then 61 61 - mkChannelSource spec 62 62 - else if spec.type == "Tarball" then 63 63 - mkTarballSource spec 64 64 - else 65 65 - builtins.throw "Unknown source type ${spec.type}"; 66 66 - in 67 67 - spec // { outPath = mayOverride name path; }; 68 68 - 69 69 - mkGitSource = 70 70 - { 71 71 - repository, 72 72 - revision, 73 73 - url ? null, 74 74 - submodules, 75 75 - hash, 76 76 - branch ? null, 77 77 - ... 78 78 - }: 79 79 - assert repository ? type; 80 80 - # At the moment, either it is a plain git repository (which has an url), or it is a GitHub/GitLab repository 81 81 - # In the latter case, there we will always be an url to the tarball 82 82 - if url != null && !submodules then 83 83 - builtins.fetchTarball { 84 84 - inherit url; 85 85 - sha256 = hash; # FIXME: check nix version & use SRI hashes 86 86 - } 87 87 - else 88 88 - let 89 89 - url = 90 90 - if repository.type == "Git" then 91 91 - repository.url 92 92 - else if repository.type == "GitHub" then 93 93 - "https://github.com/${repository.owner}/${repository.repo}.git" 94 94 - else if repository.type == "GitLab" then 95 95 - "${repository.server}/${repository.repo_path}.git" 96 96 - else 97 97 - throw "Unrecognized repository type ${repository.type}"; 98 98 - urlToName = 99 99 - url: rev: 100 100 - let 101 101 - matched = builtins.match "^.*/([^/]*)(\\.git)?$" url; 102 102 - 103 103 - short = builtins.substring 0 7 rev; 104 104 - 105 105 - appendShort = if (builtins.match "[a-f0-9]*" rev) != null then "-${short}" else ""; 106 106 - in 107 107 - "${if matched == null then "source" else builtins.head matched}${appendShort}"; 108 108 - name = urlToName url revision; 109 109 - in 110 110 - builtins.fetchGit { 111 111 - rev = revision; 112 112 - inherit name; 113 113 - # hash = hash; 114 114 - inherit url submodules; 115 115 - }; 116 116 - 117 117 - mkPyPiSource = 118 118 - { url, hash, ... }: 119 119 - builtins.fetchurl { 120 120 - inherit url; 121 121 - sha256 = hash; 122 122 - }; 123 123 - 124 124 - mkChannelSource = 125 125 - { url, hash, ... }: 126 126 - builtins.fetchTarball { 127 127 - inherit url; 128 128 - sha256 = hash; 129 129 - }; 130 130 - 131 131 - mkTarballSource = 132 132 - { 133 133 - url, 134 134 - locked_url ? url, 135 135 - hash, 136 136 - ... 137 137 - }: 138 138 - builtins.fetchTarball { 139 139 - url = locked_url; 140 140 - sha256 = hash; 141 141 - }; 142 142 - in 143 143 - if version == 5 then 144 144 - builtins.mapAttrs mkSource data.pins 145 145 - else 146 146 - throw "Unsupported format version ${toString version} in sources.json. Try running `npins upgrade`"

-38

npins/sources.json

··· 1 1 - { 2 2 - "pins": { 3 3 - "falake": { 4 4 - "type": "Git", 5 5 - "repository": { 6 6 - "type": "Forgejo", 7 7 - "server": "https://codeberg.org/", 8 8 - "owner": "FrdrCkII", 9 9 - "repo": "falake" 10 10 - }, 11 11 - "branch": "main", 12 12 - "submodules": false, 13 13 - "revision": "70761ee62e87537ad428903186146a8a773b7701", 14 14 - "url": "https://codeberg.org/FrdrCkII/falake/archive/70761ee62e87537ad428903186146a8a773b7701.tar.gz", 15 15 - "hash": "0yp7arsr15zvjhj63awmcx5n677kdxllmrwrx606rx505p99xzwa" 16 16 - }, 17 17 - "import-tree": { 18 18 - "type": "Git", 19 19 - "repository": { 20 20 - "type": "GitHub", 21 21 - "owner": "vic", 22 22 - "repo": "import-tree" 23 23 - }, 24 24 - "branch": "main", 25 25 - "submodules": false, 26 26 - "revision": "3c23749d8013ec6daa1d7255057590e9ca726646", 27 27 - "url": "https://github.com/vic/import-tree/archive/3c23749d8013ec6daa1d7255057590e9ca726646.tar.gz", 28 28 - "hash": "0p9wqkk9280ay18b3cpzwbyaq9gwvglb22yki0q03p4vb1n0mxk6" 29 29 - }, 30 30 - "nixpkgs": { 31 31 - "type": "Channel", 32 32 - "name": "nixpkgs-unstable", 33 33 - "url": "https://releases.nixos.org/nixpkgs/nixpkgs-26.05pre909321.677fbe97984e/nixexprs.tar.xz", 34 34 - "hash": "0i4jyr0xv8i90gxil1s36yqas4qfnp52bwr02fdx90chp31kchzv" 35 35 - } 36 36 - }, 37 37 - "version": 5 38 38 - }

+13 -1

with-inputs.nix

··· 1 1 let 2 2 - sources = import ./npins; 2 2 + sources = { 3 3 + # impure: from local nixpkgs registry, replace with fixed fetchGit if desired. 4 4 + nixpkgs.outPath = <nixpkgs>; 5 5 + 6 6 + import-tree = builtins.fetchGit { 7 7 + url = "https://github.com/vic/import-tree.git"; 8 8 + ref = "main"; 9 9 + shallow = true; 10 10 + narHash = "sha256-ZvYKbFib3AEwiNMLsejb/CWs/OL/srFQ8AogkebEPF0="; 11 11 + rev = "3c23749d8013ec6daa1d7255057590e9ca726646"; 12 12 + }; 13 13 + }; 14 14 + 3 15 selfInputs = builtins.mapAttrs (name: value: mkInputs name value) sources; 4 16 # from Nixlock: https://codeberg.org/FrdrCkII/nixlock/src/branch/main/default.nix 5 17 mkInputs =