feat(lib)!: refactor

7 files changed, 149 insertions, 73 deletions

diff --git a/lib/attrs.nix b/lib/attrs.nix
new file mode 100644
index 0000000..0f8ebd1
--- /dev/null
+++ b/lib/attrs.nix
@@ -0,0 +1,26 @@
+{ lib, ... }:
+
+with builtins;
+with lib;
+rec {
+  # attrsToList
+  attrsToList = attrs:
+    mapAttrsToList (name: value: { inherit name value; }) attrs;
+
+  # mapFilterAttrs ::
+  #   (name -> value -> bool)
+  #   (name -> value -> { name = any; value = any; })
+  #   attrs
+  mapFilterAttrs = pred: f: attrs: filterAttrs pred (mapAttrs' f attrs);
+
+  # Generate an attribute set by mapping a function over a list of values.
+  genAttrs' = values: f: listToAttrs (map f values);
+
+  # anyAttrs :: (name -> value -> bool) attrs
+  anyAttrs = pred: attrs:
+    any (attr: pred attr.name attr.value) (attrsToList attrs);
+
+  # countAttrs :: (name -> value -> bool) attrs
+  countAttrs = pred: attrs:
+    count (attr: pred attr.name attr.value) (attrsToList attrs);
+}
diff --git a/lib/default.nix b/lib/default.nix
index b75be10..8e95c8c 100644
--- a/lib/default.nix
+++ b/lib/default.nix
@@ -1,8 +1,18 @@
-inputs:
+{ inputs, lib, ...}:
 
-{
-  mkSystem = import ./mk_system.nix inputs;
-  mkHome = import ./mk_home.nix inputs;
-  nixosConfigurationsAsPackages = import ./nixos_configurations_as_packages.nix inputs;
-  homeConfigurationsAsPackages = import ./home_configurations_as_packages.nix inputs;
-}
+let
+  inherit (lib) makeExtensible attrValues foldr;
+  inherit (modules) mapModules;
+
+  modules = import ./modules.nix {
+    inherit lib;
+    self.attrs = import ./attrs.nix { inherit lib; self = { }; };
+  };
+
+  mylib = makeExtensible (self:
+    mapModules ./.
+    (file: import file ({ inherit lib; } // inputs)));
+in
+mylib.extend
+  (self: super:
+  foldr (a: b: a//b) { } (attrValues super))
diff --git a/lib/home_configurations_as_packages.nix b/lib/home_configurations_as_packages.nix
deleted file mode 100644
index 55d3e55..0000000
--- a/lib/home_configurations_as_packages.nix
+++ /dev/null
@@ -1,12 +0,0 @@
-{ self, ... } @ inputs:
-
-let
-  pkgs = import inputs.unstable { system = "x86_64-linux"; };
-
-  inherit (pkgs.lib) genAttrs mapAttrs';
-
-  hostNames = __attrNames self.homeConfigurations;
-  attrHostNames = genAttrs hostNames (name: "home/config/${name}");
-  configs = mapAttrs' (name: pname: { name = pname; value = self.homeConfigurations.${name}.activationPackage; }) attrHostNames;
-in
-{ x86_64-linux = configs; }
diff --git a/lib/mk_home.nix b/lib/mk_home.nix
index 925fdbe..8e63324 100644
--- a/lib/mk_home.nix
+++ b/lib/mk_home.nix
@@ -1,29 +1,30 @@
 { self, home-manager, ... } @ inputs:
+{
+  mkHome = { username, hostname, pkgs, version, extraModules ? null }:
+    let
+      entrypoint = "${self}/home/configs/${hostname}/${username}.nix";
+      defaultModule = { lib, config, ... }: {
+        _module.args.inputs = self.inputs;
+        _module.args.self = self;
 
-{ username, hostname, pkgs, version, extraModules ? null }:
-let
-  entrypoint = "${self}/home/configs/${hostname}/${username}.nix";
-  defaultModule = { lib, config, ... }: {
-    _module.args.inputs = self.inputs;
-    _module.args.self = self;
+        manual = {
+          html.enable = false;
+          manpages.enable = false;
+          json.enable = false;
+        };
 
-    manual = {
-      html.enable = false;
-      manpages.enable = false;
-      json.enable = false;
+        home = {
+          inherit username;
+          homeDirectory = "/home/${username}";
+          stateVersion = version;
+        };
+      };
+    in
+    home-manager.lib.homeManagerConfiguration {
+      pkgs = pkgs;
+      modules = [
+        defaultModule
+        entrypoint
+      ] ++ pkgs.lib.optionals (extraModules != null) extraModules;
     };
-
-    home = {
-      inherit username;
-      homeDirectory = "/home/${username}";
-      stateVersion = version;
-    };
-  };
-in
-home-manager.lib.homeManagerConfiguration {
-  pkgs = pkgs;
-  modules = [
-    defaultModule
-    entrypoint
-  ] ++ pkgs.lib.optionals (extraModules != null) extraModules;
 }
diff --git a/lib/mk_system.nix b/lib/mk_system.nix
index 54dddbe..2aca550 100644
--- a/lib/mk_system.nix
+++ b/lib/mk_system.nix
@@ -1,23 +1,32 @@
-{ self, ... } @ args:
-
-{ name, nixpkgs, system ? "x86_64-linux", overlays ? null, extraModules ? null }:
-nixpkgs.lib.nixosSystem (
-  let
-    configFolder = "${self}/nixos";
-    entryPoint = "${configFolder}/${name}/configuration.nix";
-    hardware = "${configFolder}/${name}/hardware-configuration.nix";
-  in
-  {
-    system = system;
+{ self, unstable, ... } @ args:
+{
+  mkSystem = { name, nixpkgs ? unstable, system ? "x86_64-linux", overlays ? null, extraModules ? null }:
+    nixpkgs.lib.nixosSystem (
+      let
+        configFolder = "${self}/nixos";
+        entryPoint = "${configFolder}/${name}/configuration.nix";
+        hardware = "${configFolder}/${name}/hardware-configuration.nix";
+      in
+      {
+        system = system;
 
-    specialArgs = args;
+        specialArgs = args;
 
-    modules = [
-      {
-        networking.hostName = name;
-        nix.flakes.enable = true;
-        system.configurationRevision = self.rev or "dirty";
-        documentation.man = { enable = true; generateCaches = true; };
+        modules = [
+          {
+            networking.hostName = name;
+            nix.flakes.enable = true;
+            system.configurationRevision = self.rev or "dirty";
+            documentation.man = { enable = true; generateCaches = true; };
+          }
+          entryPoint
+          hardware
+          # TODO: import all modules (use mapModules?)
+          ../modules/flakes.nix
+          ../modules/nix.nix
+          ../modules/nixpkgs.nix
+        ] ++ nixpkgs.lib.optional (overlays != null) { nixpkgs.overlays = overlays; }
+        ++ nixpkgs.lib.optionals (extraModules != null) extraModules;
       }
       entryPoint
       hardware
diff --git a/lib/modules.nix b/lib/modules.nix
new file mode 100644
index 0000000..ef7c289
--- /dev/null
+++ b/lib/modules.nix
@@ -0,0 +1,54 @@
+{ self, lib, ... }:
+
+let
+  inherit (builtins) attrValues readDir pathExists concatLists;
+  inherit (lib) id mapAttrsToList filterAttrs hasPrefix hasSuffix nameValuePair removeSuffix;
+  inherit (self.attrs) mapFilterAttrs;
+in
+rec {
+  mapModules = dir: fn:
+    mapFilterAttrs
+      (n: v:
+        v != null &&
+        !(hasPrefix "_" n))
+      (n: v:
+        let path = "${toString dir}/${n}"; in
+        if v == "directory" && pathExists "${path}/default.nix"
+        then nameValuePair n (fn path)
+        else if v == "regular" &&
+          n != "default.nix" &&
+          hasSuffix ".nix" n
+        then nameValuePair (removeSuffix ".nix" n) (fn path)
+        else nameValuePair "" null)
+      (readDir dir);
+
+  mapModules' = dir: fn:
+    attrValues (mapModules dir fn);
+
+  mapModulesRec = dir: fn:
+    mapFilterAttrs
+      (n: v:
+        v != null &&
+        !(hasPrefix "_" n))
+      (n: v:
+        let path = "${toString dir}/${n}"; in
+        if v == "directory"
+        then nameValuePair n (mapModulesRec path fn)
+        else if v == "regular" && n != "default.nix" && hasSuffix ".nix" n
+        then nameValuePair (removeSuffix ".nix" n) (fn path)
+        else nameValuePair "" null)
+      (readDir dir);
+
+  mapModulesRec' = dir: fn:
+    let
+      dirs =
+        mapAttrsToList
+          (k: _: "${dir}/${k}")
+          (filterAttrs
+            (n: v: v == "directory" && !(hasPrefix "_" n))
+            (readDir dir));
+      files = attrValues (mapModules dir id);
+      paths = files ++ concatLists (map (d: mapModulesRec' d id) dirs);
+    in
+    map fn paths;
+}
diff --git a/lib/nixos_configurations_as_packages.nix b/lib/nixos_configurations_as_packages.nix
deleted file mode 100644
index 356b09b..0000000
--- a/lib/nixos_configurations_as_packages.nix
+++ /dev/null
@@ -1,12 +0,0 @@
-{ self, ... } @ inputs:
-
-let
-  pkgs = import inputs.unstable { system = "x86_64-linux"; };
-
-  inherit (pkgs.lib) genAttrs mapAttrs';
-
-  hostNames = __attrNames self.nixosConfigurations;
-  attrHostNames = genAttrs hostNames (name: "nixos/config/${name}");
-  configs = mapAttrs' (name: pname: { name = pname; value = self.nixosConfigurations.${name}.config.system.build.toplevel; }) attrHostNames;
-in
-{ x86_64-linux = configs; }