alexion
c00eed81e9
Cut restated "what", domain-glossary framing, cross-file consumption narration, and against-alternative justification from in-file comments; keep only non-obvious "why" and load-bearing pointers. Drop the `generateCompletions` line (a no-op restatement of the upstream default) and its comment.
82 lines
2.0 KiB
Nix
82 lines
2.0 KiB
Nix
{
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lib,
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inputs,
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self,
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}:
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let
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inherit (lib)
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attrNames
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filterAttrs
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genAttrs
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flatten
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hasSuffix
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mapAttrsToList
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;
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# Recursively collect every `.nix` file under `dir` as a flat list, for a
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# module's `imports`.
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collectNixFiles =
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dir:
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flatten (
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mapAttrsToList (
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name: type:
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let
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path = dir + "/${name}";
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in
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if type == "directory" then
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collectNixFiles path
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else if type == "regular" && hasSuffix ".nix" name then
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[ path ]
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else
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[ ]
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) (builtins.readDir dir)
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);
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# Build one host: every module is imported unconditionally (inert until its
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# `enable` flag is set), alongside home-manager, chaotic, the shared base, and
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# the host's own directory.
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mkHost =
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{
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hostName,
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system ? "x86_64-linux",
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}:
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inputs.nixpkgs.lib.nixosSystem {
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inherit system;
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specialArgs = {
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inherit inputs;
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my = self.lib;
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};
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modules =
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(collectNixFiles (self + "/modules"))
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++ [
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inputs.home-manager.nixosModules.home-manager
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inputs.chaotic.nixosModules.default
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inputs.disko.nixosModules.disko
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(self + "/system")
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(self + "/hosts/${hostName}")
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{ networking.hostName = hostName; }
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];
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};
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# Discover every host (a subdirectory of `hostsDir`) and build each one.
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mkHosts =
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hostsDir:
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let
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hostNames = attrNames (filterAttrs (_name: type: type == "directory") (builtins.readDir hostsDir));
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in
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genAttrs hostNames (hostName: mkHost { inherit hostName; });
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# --- Script-from-file helper --------------------------------------------
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# Turn a standalone script file into a package on PATH, keeping the script
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# itself editable as a real file rather than an inlined heredoc.
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scriptFromFile = pkgs: name: path: pkgs.writeShellScriptBin name (builtins.readFile path);
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in
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{
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inherit
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collectNixFiles
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mkHost
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mkHosts
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scriptFromFile
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;
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}
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