Go back to using stable channels and add unstable channel as a separate channel

NixOS 20.09 is just around the corner anyways so the packages will be updated soonish.

README.adoc

@@ -1,7 +1,8 @@
 = foo-dogsquared's NixOS config
+:toc:
 
 This is the configuration setup for my https://nixos.org[NixOS] instance.
-This setup is stolen from https://github.com/hlissner/dotfiles[hlissner's NixOS config] foot:[The author and one-man maintainer of Doom Emacs.].
+This setup is stolen from https://github.com/hlissner/dotfiles[hlissner's NixOS config] footnote:[The author and one-man maintainer of Doom Emacs.].
 The whole setup is mostly intended for single-user systems but you can easily configure it for multi-user systems.
 
 
@@ -61,36 +62,73 @@ nixos-config
 ├── hosts/
 ├── modules/
 ├── packages/
+├── templates/
 ├── default.nix*
 ├── Makefile*
 └── README.adoc*
 ----
 
-* The directory paid with the most attention would most likely be the `modules/` folder.
+* The directory paid with the most attention would most likely be the `modules/` folder which contains cluster-wide footnote:[Whenever I say 'cluster-wide', I really mean my laptop (which I have none at the moment) and desktop (which I have only one at the moment).]  modules intended to be used in each device.
-Each module (and submodule) can contain multiple modules for multiple programs (i.e., `modules/shell/git`, `modules/desktop/bspwm`).
-It could also contain a `base.nix` file where Nix packages with no configurations are placed similar to Arch package groups.
 
 ** Another folder worthy of attention is the `modules/themes` which sets up a complete desktop environment for you so you don't have to.
 For more information, see the <<Themes>> section.
 
-* The `config/` directory is simply the ad hoc configuration of several programs.
+* The `config/` directory is simply the all-seeing cluster-wide ad hoc configuration of several programs.
 In this case, it is my https://github.com/foo-dogsquared/dotflies[dotfiles] directory.
 
-* The `hosts/` contains the individual system configuration of my machine (I've only one but I plan to NixOS for my new ones).
+* The `hosts/` contains the machine-specific configurations of the machine (I've only one but I plan to install NixOS for my new ones).
-Each folder inside of this directory represents one machine.
 It is also used on the installation phase (from `make install`) by setting the `HOST` variable (i.e., `HOST=zilch make -C /etc/install`) with the folder name as the argument.
+See the <<Hosts>> section for more details.
 
 * The `packages/` folder is my custom packages either the new ones that haven't made into nixpkgs yet or packages with overrides.
 Also contains third-party package repositories and overlays such as the https://github.com/nix-community/NUR[NUR], https://github.com/nix-community/emacs-overlay[unstable branch of Emacs], or the unstable branch of https://github.com/NixOS/nixpkgs/[nixpkgs].
 
+* The `templates/` directory is a bunch of https://github.com/cookiecutter/cookiecutter/[Cookiecutter] templates intended for easy creation/deployment of customized systems (e.g., graphical desktop environments, customized modules).
+
+
+
+
+== Hosts
+
+Each machine is represented with a directory in link:./hosts/[`./hosts`] with the name of the directory as the name of the machine.
+footnote:[It is basically using the pets approach (from pets versus cattle thing).]
+
+Each host should have an entrypoint at `./hosts/$HOST/default.nix` which is then used from the entrypoint of this setup at link:./default.nix[`./default.nix`] (i.e., `import /etc/dotfiles "$HOST" "$USER"`).
+It may contain machine-specific configurations (e.g., specific systemd units, Recoll index building, GNU Nano configurations), other Nix modules for modularity, and other sorts of knick-knacks (e.g., other wallpapers, machine-specific scripts).
+
+For best practice, you may want to follow the following project structure:
+
+[source, tree]
+----
+./hosts/$HOST
+├── config/
+├── modules/
+├── default.nix*
+├── hardware-configuration.nix*
+└── README.adoc
+----
+
+* `config/` contains the specific config files.
+
+* `modules/` stores the other Nix modules to be used in `default.nix`.
+
+* `default.nix` is the entrypoint for our host module.
+It contains configuration of our link:./modules[`./modules`], NixOS (i.e., `man configuration.nix`), https://github.com/rycee/home-manager[home-manager] (i.e., `man home-configuration.nix`), and other things you might want to include in the host-specific `$HOST/modules/` folder.
+
+* `hardware-configuration.nix` is there for hardware configurations...
+(I plan to remove this one since it should use the dynamically generated hardware config at `/etc/nixos/hardware-configuration.nix`.)
+
+* A README file in whatever format you prefer.
+(I just choose https://asciidoctor.org/[Asciidoctor] with the `.adoc` file extension since it's my go-to document format.)
+
 
 
 
 == Themes
 
 My setup feature themes as a NixOS module (in link:./modules/themes[`modules/themes`]) which sets up a complete graphical environment.
-This lets me easily switch my graphical setup with a simple toggle (i.e., `theme.$THEME_NAME.enable = true;`).
+This lets me easily switch my graphical setup with a simple toggle (i.e., `theme.$THEME_NAME.enable = true;`) in my machine configuration (i.e., `./hosts/$HOST/default.nix`).
-For safety, you should have a bare installation ala-Arch Linux.
+For safety from conflicting modules and configuration, you should have a bare installation ala-Arch Linux.
 
 As you can see in the `default.nix` of the `modules/theme` directory, a theme should also pass in certain data to `modules.theme` as if it's enabled.
 The following is an example metadata object of a theme.

default.nix

@@ -4,7 +4,7 @@
 # License: MIT
 #
 # This is ground zero, where the absolute essentials go, to be present on all systems I use nixos on.
-# Most of which are single user systems (the ones that aren't are configured from their hosts/*/default.nix).
+# Contains cluser-wide configurations shared between all of the systems (located in `hosts/`).
 
 device: username:
 { pkgs, options, lib, config, ... }:
@@ -49,7 +49,7 @@ device: username:
     killall
     ntfs3g
     sshfs
-    udiskie 
+    udiskie
     unzip
     vim
     wget

hosts/zilch/default.nix

@@ -1,3 +1,5 @@
+# My NixOS config...
+# This is where the specific setup go from setting environment variables, specific aliases, installing specific packages (e.g., muh games), and so forth.
 { config, pkgs, lib, ... }:
 
 {
@@ -5,6 +7,8 @@
     ./hardware-configuration.nix
   ];
 
+  nixpkgs.overlays = import ./modules/overlays.nix;
+
   # Use the systemd-boot EFI boot loader.
   boot.loader.systemd-boot.enable = true;
   boot.loader.efi.canTouchEfiVariables = true;
@@ -74,7 +78,7 @@
         jupyter.enable = true;
         latex.enable = true;
       };
-      gamedev = {
+      game-dev = {
         godot.enable = true;
         unity3d.enable = true;
       };
@@ -126,15 +130,28 @@
     unstable.openmw              # Losing is even more meh1
     unstable.wesnoth             # Losing is frustrating!
     unstable.zeroad              # Losing is fun and frustrating!
+
+    # Installing some of the dependencies required for my scripts.
+    ffcast
+    giflib
+    leptonica
+    libpng
+    libwebp
+    maim
+    (tesseract.override { enableLanguages = [ "eng" ]; })
+    slop
+    xdg-user-dirs
+    zbar
   ];
 
+  # Setting up the shell environment.
   my.env = {
     BROWSER = "firefox";
     FILE = "lf";
     READ = "zathura";
     SUDO_ASKPASS = <config/bin/askpass>;
   };
-  my.alias.dots = "USER=${config.my.username} make -C /etc/install";
+  my.alias.dots = "USER=${config.my.username} make -C /etc/dotfiles";
 
   # Set your time zone.
   time.timeZone = "Asia/Manila";

hosts/zilch/modules/overlays.nix

@@ -0,0 +1,15 @@
+# All of the machine-specific overlays.
+[
+  (self: super:
+  {
+    rofi = super.rofi.overrideAttrs (oldAttrs: {
+      name = "rofi-next";
+      src = super.fetchFromGitHub {
+        owner = "davatorium";
+        repo = "rofi";
+        rev = "802a9489e7fbf809890ab6bf39e62664fa4c134f";
+        sha256 = "1qjqw7v6qdmc5bxfaq57cb8hf99vr0prp5bn4yzal7r5im855s8f";
+      };
+    });
+  })
+]

modules/dev/base.nix

@@ -15,7 +15,8 @@ with lib;
       caddy2            # THE ULTIMATE HTTPS/2 SERVER FOR 'YER GOLFIN' SESSIONS!!!
       cookiecutter      # A project scaffolding tool.
       gnumake           # Make your life easier with GNU Make.
-      stow              # Build your symlink farm.
+      hyperfine         # You shouldn't be feel just fine with your programs...
+      stow              # Build your symlink farm on the other side of the country, er, filesystem.
       tldr              # What manuals should include.
       universal-ctags   # Enable fast traveling to your code (assuming written in a supported language).
     ];

modules/dev/documentation.nix

@@ -42,7 +42,7 @@ in
 
     (if cfg.jupyter.enable then [
       jupyter           # The interactive notebook.
-      iruby             # The Ruby kernel for Jupyter.
+      unstable.iruby             # The Ruby kernel for Jupyter.
     ] else []) ++
 
     (if cfg.latex.enable then [

modules/dev/gamedev.nix

@@ -20,12 +20,12 @@ in
   config = {
     my.packages = with pkgs;
       (if cfg.godot.enable then [
-        godot       # The Godot, not to be confused with a certain prosecutor.
+        unstable.godot       # The Godot, not to be confused with a certain prosecutor.
       ] else []) ++
 
       (if cfg.unity3d.enable then [
-        unity3d     # The Unity, not to be confused with a certain ideal.
+        unstable.unity3d     # The Unity, not to be confused with a certain ideal.
-        unityhub    # The ideal hub for your Unity projects.
+        unstable.unityhub    # The ideal hub for your Unity projects.
       ] else []);
   };
 }

modules/dev/perl.nix

@@ -0,0 +1,22 @@
+# The language for portable shell scripting.
+{ config, options, lib, pkgs, ... }:
+
+with lib;
+{
+  options.modules.dev.perl = {
+    enable = mkOption {
+      type = types.bool;
+      default = false;
+    };
+  };
+
+  config = mkIf config.modules.dev.perl.enable {
+    my.packages = with pkgs; [
+      perl
+      perlPackages.ModernPerl
+      perlPackages.ModuleBuild
+      perlPackages.ModuleInfo
+      perlPackages.ModuleInstall
+    ];
+  };
+}

modules/editors/emacs.nix

@@ -15,7 +15,7 @@ with lib;
     # Just make sure the unstable version of Emacs is available as a package by creating an overlay.
     pkg = mkOption {
       type = types.package;
-      default = pkgs.emacs;
+      default = pkgs.unstable.emacs;
     };
   };
 

modules/themes/fair-and-square/config/rofi/themes/fds-mini-sidebar.rasi

@@ -37,8 +37,8 @@ window {
 
     height: 65%;
     width: 35%;
-    position: southwest;
+    position: center;
-    location: southwest;
+    location: center;
     text-color: @foreground;
 }
 

templates/themes/fair-and-square/{{ cookiecutter.name | slugify }}/config/rofi/themes/fds-mini-sidebar.rasi

@@ -37,8 +37,8 @@ window {
 
     height: 65%;
     width: 35%;
-    position: southwest;
+    position: center;
-    location: southwest;
+    location: center;
     text-color: @foreground;
 }