Refine home-manager and channels installation steps with nix flake (#261

)

.github/workflows/ci-home.yml

@@ -26,25 +26,15 @@ jobs:
         os:
           - ubuntu-22.04
           - macos-13
-        home-manager-channel-ref:
-          - a8f8f48320c64bd4e3a266a850bbfde2c6fe3a04 # Pinned for current use
-          - master # unstable nixpkgs
 
     runs-on: ${{ matrix.os }}
     steps:
       - uses: DeterminateSystems/nix-installer-action@v4
       - uses: DeterminateSystems/magic-nix-cache-action@v2
-      - name: Register Nix Channels
-        run: |
-          nix-channel --add https://releases.nixos.org/nixpkgs/nixpkgs-23.11pre511546.844ffa82bbe2/nixexprs.tar.xz nixpkgs
-          nix-channel --add https://github.com/nix-community/home-manager/archive/${{ matrix.home-manager-channel-ref }}.tar.gz home-manager
-          nix-channel --update
-          nix-channel --list
-      - name: Print nixpkgs version after updating channels
-        run: nix-instantiate --eval -E '(import <nixpkgs> {}).lib.version'
-      - run: nix-shell '<home-manager>' -A install
       - uses: actions/checkout@v3
-      - run: home-manager switch -b backup -f ./home-manager/user-github-actions.nix
+      # https://www.reddit.com/r/Nix/comments/1443k3o/comment/jr9ht5g/?utm_source=reddit&utm_medium=web2x&context=3
+      - run: mkdir -p ~/.local/state/nix/profiles
+      - run: nix run .#home-manager -- switch -b backup --flake .#github-actions
       - name: Print some paths and versions
         run: |
           which fish

Makefile.toml

@@ -69,24 +69,30 @@ args = [
 ]
 
 [tasks.test]
-command = 'home-manager'
+command = 'nix'
 args = [
+  'run',
+  '.#home-manager',
+  '--',
   'switch',
   '-n', # dry-run
   '-b',
   'backup',
-  '-f',
-  './home-manager/home.nix',
+  '--flake',
+  '.#kachick',
 ]
 
 [tasks.apply]
-command = 'home-manager'
+command = 'nix'
 args = [
+  'run',
+  '.#home-manager',
+  '--',
   'switch',
   '-b',
   'backup',
-  '-f',
-  './home-manager/home.nix',
+  '--flake',
+  '.#kachick',
 ]
 
 [tasks.enable_login_shells]

README.md

@@ -10,5 +10,13 @@ Also known as [盆栽(bonsai)](https://en.wikipedia.org/wiki/Bonsai) 🌳
 
 ## Installation
 
-- To reactivate, you only need to run `makers apply`.
-- For the first installation of your operating system, it may require more steps. Check the [wiki](https://github.com/kachick/dotfiles/wiki/Installation) for more details.
+1. If you are installing a Unix-like operating system, install the [Nix](https://nixos.org/) package manager first.
+   \
+   Typically, this should be done in **one of** the following ways.
+   - `sh <(curl -L https://nixos.org/nix/install) --daemon`
+   - `curl --proto '=https' --tlsv1.2 -sSf -L https://install.determinate.systems/nix | sh -s -- install`
+1. This repository is a flake, that includes installation steps of [home-manager](https://github.com/nix-community/home-manager) and dotfiles, you can run as follows
+   - `nix run github:kachick/dotfiles#home-manager -- switch -b backup --flake github:kachick/dotfiles#kachick`
+1. If you experience any problems with the installation, See https://github.com/kachick/dotfiles/wiki/Installation for more details.
+1. If you are on the development of this repository, the simple reactivation just needs to run as follows.
+   - `makers apply`

flake.nix

@@ -7,9 +7,15 @@
     #   - `nix flake update --commit-lock-file` # https://nixos.org/manual/nix/stable/command-ref/new-cli/nix3-flake-update.html
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
     flake-utils.url = "github:numtide/flake-utils";
+    # https://github.com/nix-community/home-manager/blob/master/docs/nix-flakes.adoc
+    home-manager = {
+      # candidates: "github:nix-community/home-manager/release-23.05";
+      url = "github:nix-community/home-manager/master";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
   };
 
-  outputs = { self, nixpkgs, flake-utils }:
+  outputs = { self, nixpkgs, home-manager, flake-utils }:
     flake-utils.lib.eachDefaultSystem (system:
       let
         pkgs = nixpkgs.legacyPackages.${system};
@@ -37,6 +43,26 @@
             ];
           };
 
+        packages.homeConfigurations =
+          {
+            kachick = home-manager.lib.homeManagerConfiguration {
+              inherit pkgs;
+              modules = [
+                ./home-manager/home.nix
+              ];
+            };
+
+            github-actions = home-manager.lib.homeManagerConfiguration {
+              inherit pkgs;
+              modules = [
+                ./home-manager/home.nix
+                {
+                  home.username = "runner";
+                }
+              ];
+            };
+          };
+
         # https://gist.github.com/Scoder12/0538252ed4b82d65e59115075369d34d?permalink_comment_id=4650816#gistcomment-4650816
         packages.json2nix = pkgs.writeScriptBin "json2nix" ''
           ${pkgs.python3}/bin/python ${pkgs.fetchurl {
@@ -46,7 +72,13 @@
         '';
 
         apps = {
-          # nix run .#json2nix
+          # example: `nix run .#home-manager -- switch -n -b backup --flake .#kachick`
+          # https://github.com/NixOS/nix/issues/6448#issuecomment-1132855605
+          home-manager = flake-utils.lib.mkApp {
+            drv = home-manager.defaultPackage.${system};
+          };
+
+          # example: `nix run .#json2nix gitconfig.json`
           json2nix = {
             type = "app";
             program = "${packages.json2nix}/bin/json2nix";

home-manager/git.nix

@@ -1,4 +1,4 @@
-{ config, pkgs, ... }:
+{ config, ... }:
 
 {
   # https://github.com/nix-community/home-manager/blob/master/modules/programs/git.nix