From 61d433c8e7cc17d5b921329fca9baf7c3d528ade Mon Sep 17 00:00:00 2001
From: Alejandro Soto <alejandro@34project.org>
Date: Tue, 27 Dec 2022 01:19:08 -0600
Subject: flake: rework flake inputs, overlays and platforms

---
 config.nix       |  3 ---
 flake.nix        | 72 ++++++++++++++++++++++++++++++++++++--------------------
 home/default.nix | 18 ++++----------
 pkgs/default.nix | 45 ++++++++++++++++-------------------
 sys/default.nix  |  6 -----
 5 files changed, 71 insertions(+), 73 deletions(-)
 delete mode 100644 config.nix

diff --git a/config.nix b/config.nix
deleted file mode 100644
index 8d78534..0000000
--- a/config.nix
+++ /dev/null
@@ -1,3 +0,0 @@
-{
-  android_sdk.accept_license = true;
-}
diff --git a/flake.nix b/flake.nix
index 1984f07..c1538c4 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,7 +1,7 @@
 {
   inputs = {
     nixpkgs.url = "github:nixos/nixpkgs/nixos-22.11";
-    nixpkgsUnstable.url = "github:nixos/nixpkgs";
+    unstable.url = "github:nixos/nixpkgs";
 
     home-manager = {
       url = "github:nix-community/home-manager/release-22.11";
@@ -14,47 +14,69 @@
   };
 
   outputs =
-    { self, nixpkgs, nixpkgsUnstable, home-manager
-    , nur, impermanence, hm-isolation, ... }:
-    with nixpkgs.lib; let
+    { self, nixpkgs, unstable, home-manager, nur, impermanence, hm-isolation, ... }: let
+      system = "x86_64-linux";
+
+      pkgs = pkgsNoLocal.extend self.overlays.default;
+      pkgsNoLocal = importPkgs nixpkgs;
+
+      importPkgs = flake: import flake {
+        inherit system;
+
+        config.android_sdk.accept_license = true;
+        overlays = [ nur.overlay ];
+      };
+
       util = import ./util;
-      inherit (util nixpkgs.lib) importAll;
+      inherit (util pkgs.lib) importAll;
 
-      pkgSet = pkgs: import ./pkgs pkgs;
-    in {
-      packages."x86_64-linux" = pkgSet nixpkgs.legacyPackages."x86_64-linux";
+      local = import ./pkgs;
+    in with pkgs.lib; {
+      packages.${system} = local pkgs pkgsNoLocal;
 
-      overlay = self: super: {
-        local = pkgSet super;
-        unstable = import nixpkgsUnstable { inherit (super) config system; };
+      overlays.default = final: prev: {
+        local = local final prev;
+        unstable = (importPkgs unstable).extend self.overlays.default;
       };
 
       nixosConfigurations = let
-        hostConfig = host: (makeOverridable nixosSystem) {
-          system = "x86_64-linux";
-          modules = [ (import ./sys { inherit self impermanence; }) host ];
+        hostConfig = host: (makeOverridable nixpkgs.lib.nixosSystem) {
+          inherit pkgs system;
+
+          modules = [
+            ./sys
+            host
+            nixpkgs.nixosModules.notDetected
+            impermanence.nixosModule
+          ];
         };
       in mapAttrs (_: hostConfig) (importAll { root = ./sys/platform; });
 
       homeConfigurations = let
-        configuration = import ./home {
-          inherit self nixpkgs nixpkgsUnstable nur hm-isolation;
+        registry = { ... }: {
+          config.nix.registry = {
+            "nixpkgs".flake = nixpkgs;
+            "unstable".flake = unstable;
+            "nur".flake = nur;
+          };
         };
 
-        username = "ale";
-
         home = platform: home-manager.lib.homeManagerConfiguration {
-          pkgs = import nixpkgs { system = "x86_64-linux"; };
-          modules = [ configuration platform ];
+          inherit pkgs;
 
-          # Optionally use extraSpecialArgs
-          # to pass through arguments to home.nix
-          extraSpecialArgs = {};
+          modules = [
+            ./home
+            platform
+            registry
+            hm-isolation.homeManagerModule
+          ];
         };
 
-        platformHome = name: platform: {
-          name = "${username}@${name}";
+        platformHome = name: platform: let
           value = home platform;
+        in {
+          inherit value;
+          name = "${value.config.home.username}@${name}";
         };
       in mapAttrs' platformHome (importAll { root = ./home/platform; });
     };
diff --git a/home/default.nix b/home/default.nix
index d6e8a81..5d92b6e 100644
--- a/home/default.nix
+++ b/home/default.nix
@@ -1,8 +1,6 @@
-{ self, nixpkgs, nixpkgsUnstable, nur, hm-isolation }:
 { lib, config, pkgs, ... }:
 with lib; {
   imports = [
-    hm-isolation.homeManagerModule
     ./desktop.nix
     ./environ.nix
     ./graphics.nix
@@ -15,17 +13,9 @@ with lib; {
   };
 
   config = {
-    nixpkgs.overlays = [ nur.overlay self.overlay ];
-
-    nix.registry = {
-      "nixpkgs".flake = nixpkgs;
-      "nixpkgsUnstable".flake = nixpkgsUnstable;
-      "nur".flake = nur;
-
-      "system".to = {
-        type = "path";
-        path = "/home/ale/nix";
-      };
+    nix.registry."system".to = {
+      type = "path";
+      path = "${config.home.homeDirectory}/nix";
     };
 
     home = {
@@ -40,7 +30,7 @@ with lib; {
       stateVersion = "21.11";
 
       username = "ale";
-      homeDirectory = "/home/ale";
+      homeDirectory = "/home/${config.home.username}";
 
       sessionVariables = {
         EDITOR = "nvim";
diff --git a/pkgs/default.nix b/pkgs/default.nix
index 21d9686..bed50a3 100644
--- a/pkgs/default.nix
+++ b/pkgs/default.nix
@@ -1,28 +1,23 @@
-pkgs:
-with pkgs.lib; let
-  inherit (pkgs) buildEnv callPackage writeTextDir;
-
-  combined = pkgs // { inherit local; };
-
-  local = {
-    btclone = callPackage ./btclone {};
-    git-aliases = callPackage ./git-aliases.nix {};
-    mssql-tools = callPackage ./mssql-tools.nix {};
-    oregano = callPackage ./oregano {};
-    rqlite = callPackage ./rqlite.nix {};
-    rv8 = callPackage ./rv8.nix {};
-    scripts = callPackage ./scripts {};
-    tmux-lift = callPackage ./tmux-lift {};
+final: prev: let
+  inherit (final) callPackage fetchpatch;
+in {
+  btclone = callPackage ./btclone {};
+  git-aliases = callPackage ./git-aliases.nix {};
+  mssql-tools = callPackage ./mssql-tools.nix {};
+  oregano = callPackage ./oregano {};
+  rqlite = callPackage ./rqlite.nix {};
+  rv8 = callPackage ./rv8.nix {};
+  scripts = callPackage ./scripts {};
+  tmux-lift = callPackage ./tmux-lift {};
   
-    st = pkgs.st.override {
-      conf = import ./st.nix {};
+  st = prev.st.override {
+    conf = import ./st.nix {};
   
-      patches = [
-        (pkgs.fetchpatch {
-          url = "https://st.suckless.org/patches/clipboard/st-clipboard-0.8.3.diff";
-          sha256 = "cbb37675e9b4986836c19aadacc616a006df81c9bf394e9e3573e164fa1867cf";
-        })
-      ];
-    };
+    patches = [
+      (fetchpatch {
+        url = "https://st.suckless.org/patches/clipboard/st-clipboard-0.8.3.diff";
+        sha256 = "cbb37675e9b4986836c19aadacc616a006df81c9bf394e9e3573e164fa1867cf";
+      })
+    ];
   };
-in local
+}
diff --git a/sys/default.nix b/sys/default.nix
index ef60f43..47203f9 100644
--- a/sys/default.nix
+++ b/sys/default.nix
@@ -1,10 +1,6 @@
-{ self, impermanence }:
 { lib, config, pkgs, modulesPath, ... }:
 with lib; {
   imports = [
-    "${modulesPath}/installer/scan/not-detected.nix"
-    impermanence.nixosModule
-
     ./auth.nix
     ./boot.nix
     ./fs
@@ -14,8 +10,6 @@ with lib; {
   ];
 
   config = {
-    nixpkgs.overlays = [ self.overlay ];
-
     # This value determines the NixOS release from which the default
     # settings for stateful data, like file locations and database versions
     # on your system were taken. It‘s perfectly fine and recommended to leave
-- 
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