oeiuwq.com
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README.md
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-11
README.md
···
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This repo contains several non-flakes examples (one per branch):
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- [unflake](https://github.com/vic/dendritic-unflake/tree/main) **current**
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- [unflake](https://github.com/vic/dendritic-unflake/tree/main)
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- [npins](https://github.com/vic/dendritic-unflake/tree/npins)
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- [builtins](https://github.com/vic/dendritic-unflake/tree/builtins)
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- [builtins](https://github.com/vic/dendritic-unflake/tree/builtins) **current**
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- [froyo](https://github.com/vic/dendritic-unflake/tree/froyo)
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- [falake](https://github.com/vic/dendritic-unflake/tree/falake)
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- [flake-parts](https://github.com/vic/dendritic-unflake/tree/flake-parts)
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# Dendritic unflake
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# Dendritic stable-nix
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This repository serves as an example Dendritic Nix implementation **without** flakes nor flake-parts.
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([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))
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Entry point is [default.nix](default.nix), [modules/example.nix](modules/example.nix) defines a nixosConfiguration.
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This example uses [unflake](https://discourse.nixos.org/t/unflake-flake-dependencies-for-non-flake-projects-and-a-way-to-stop-writing-follows/72611) to fetch dependencies and provide flake-like inputs.
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This example uses `builtins.fetchGit` to fetch dependencies and [with-inputs.nix](with-inputs.nix) to provide flake-like inputs.
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## Usage
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Regenerate [unflake.nix](unflake.nix) whenever [inputs.nix](inputs.nix) change:
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```console
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nix-shell https://ln-s.sh/unflake -A unflake-shell --run unflake
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```
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Build `my-laptop` nixos config:
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default.nix
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default.nix
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inputs.nix
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inputs.nix
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unflake.nix
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unflake.nix
···
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let
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deps = rec {
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unflake_github_nixos_nixpkgs_ref_nixpkgs-unstable = builtins.fetchTree {
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type = "github";
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owner = "nixos";
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repo = "nixpkgs";
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rev = "677fbe97984e7af3175b6c121f3c39ee5c8d62c9";
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narHash = "sha256-g2a4MhRKu4ymR4xwo+I+auTknXt/+j37Lnf0Mvfl1rE=";
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};
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unflake_github_vic_import-tree = builtins.fetchTree {
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type = "github";
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owner = "vic";
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repo = "import-tree";
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rev = "3c23749d8013ec6daa1d7255057590e9ca726646";
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narHash = "sha256-ZvYKbFib3AEwiNMLsejb/CWs/OL/srFQ8AogkebEPF0=";
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};
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};
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universe = rec {
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unflake_github_nixos_nixpkgs_ref_nixpkgs-unstable = ((import "${deps.unflake_github_nixos_nixpkgs_ref_nixpkgs-unstable.outPath}/flake.nix").outputs {
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self = unflake_github_nixos_nixpkgs_ref_nixpkgs-unstable;
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}) // deps.unflake_github_nixos_nixpkgs_ref_nixpkgs-unstable // {
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_flake = true;
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outPath = "${deps.unflake_github_nixos_nixpkgs_ref_nixpkgs-unstable.outPath}";
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sourceInfo = deps.unflake_github_nixos_nixpkgs_ref_nixpkgs-unstable;
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};
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unflake_github_vic_import-tree = ((import "${deps.unflake_github_vic_import-tree.outPath}/flake.nix").outputs {
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self = unflake_github_vic_import-tree;
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}) // deps.unflake_github_vic_import-tree // {
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_flake = true;
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outPath = "${deps.unflake_github_vic_import-tree.outPath}";
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sourceInfo = deps.unflake_github_vic_import-tree;
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};
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};
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inputs = {
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import-tree = universe.unflake_github_vic_import-tree;
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nixpkgs = universe.unflake_github_nixos_nixpkgs_ref_nixpkgs-unstable;
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self = throw "to use inputs.self, write `import ./unflake.nix (inputs: ...)`";
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withInputs = outputs: let self = outputs (inputs // { inherit self; }); in self;
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__functor = self: self.withInputs;
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};
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in inputs
+51
with-inputs.nix
+51
with-inputs.nix
···
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let
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sources = {
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# impure: from local nixpkgs registry, replace with fixed fetchGit if desired.
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nixpkgs.outPath = <nixpkgs>;
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import-tree = builtins.fetchGit {
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url = "https://github.com/vic/import-tree.git";
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ref = "main";
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shallow = true;
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narHash = "sha256-ZvYKbFib3AEwiNMLsejb/CWs/OL/srFQ8AogkebEPF0=";
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rev = "3c23749d8013ec6daa1d7255057590e9ca726646";
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};
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};
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selfInputs = builtins.mapAttrs (name: value: mkInputs name value) sources;
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# from Nixlock: https://codeberg.org/FrdrCkII/nixlock/src/branch/main/default.nix
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mkInputs =
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name: sourceInfo:
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let
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flakePath = sourceInfo.outPath + "/flake.nix";
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isFlake = sources.${name}.flake or true;
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in
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if isFlake && builtins.pathExists flakePath then
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let
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flake = import (sourceInfo.outPath + "/flake.nix");
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inputs = builtins.mapAttrs (name: value: selfInputs.${name}) (flake.inputs or { });
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outputs = flake.outputs (inputs // { inherit self; });
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self =
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sourceInfo
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// outputs
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// {
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_type = "flake";
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inherit inputs sourceInfo;
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};
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in
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self
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else
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sourceInfo
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// {
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inherit sourceInfo;
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};
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in
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selfInputs
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// {
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__functor =
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selfInputs: outputs:
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let
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self = outputs (selfInputs // { inherit self; });
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in
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self;
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}