alexion
451c02f798
Stand up the walking skeleton the rest of the laptop MVI extends and re-verifies against: the whole neogaia Host evaluates and its system toplevel builds (nix flake check green). - flake.nix: hand-rolled flake (no flake-parts). Base nixos-unstable, plus nixpkgs-unstable and nixos-25.05 for the per-package unstable/stable overlays, home-manager (nixpkgs followed), and chaotic-nyx (deliberately not following our nixpkgs, to keep its binary cache usable). checks build each Host toplevel. - lib/: trimmed helper lib — the Auto-loader (recursive .nix discovery, no null-placeholder hack), the host-builder, and the script-from-file helper. Deps inherited explicitly; no with lib.my, no nixosModules output. - system/: shared base config — the unstable/stable overlays, the user option (defaults to alexion, in wheel, drives system + home-manager user in lockstep), flakes, git, and home-manager as a NixOS module. - modules/example.nix: Auto-loader / Enable-convention reference Module, inert until enabled. - hosts/neogaia/: minimal laptop Host — placeholder filesystems, bootloader, and hardware profile. - CLAUDE.md: project agent instructions with a Gotchas section (nix on the CachyOS dev host, the chaotic overlay/cache behaviour, the forge CLI).
84 lines
2.2 KiB
Nix
84 lines
2.2 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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# --- Auto-loader ---------------------------------------------------------
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# Recursively collect every `.nix` file under `dir`, returned as a flat list
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# of paths suitable for a module `imports`. No null-placeholder traversal
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# hack: a directory recurses, a `.nix` file is taken, anything else is skipped.
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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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# --- Host-builder --------------------------------------------------------
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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,
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# and 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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(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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