refactor: nix

.gitignore

@@ -3,3 +3,6 @@
 
 abercompsoc\.github\.io\.iml
 /.sass-cache/
+
+_site
+.jekyll-cache

README.md

@@ -1,25 +1,19 @@
-abercompsoc.github.io
-=====================
+## abercompsoc.github.io
 
 A jekell site cargo-culted from [daktilo](https://github.com/kronik3r/daktilo).
 
-Developing
-----------
+### Developing
 
-If you're lucky enough to be running NixOS, run:
+1) Install Jekyll. For more info see the [installation guide](http://jekyllrb.com/docs/installation/).
+If you're lucky enough to be running Nix, run:
 
 ```bash
-$ nix-shell . --run "jekyll s"
+nix develop # to use the flake
+nix-shell # to use the shell.nix
 ```
 
-in this directory to generate and serve the site locally.
-
-If you're on another platform, you'll need to install jekyll manually, then
-run:
+2) Run the following command to start the Jekyll server:
 
 ```bash
-$ jekyll s
+jekyll s
 ```
-
-See the [installation guide](http://jekyllrb.com/docs/installation/) for more
-details on manually installing.

flake.nix

@@ -0,0 +1,21 @@
+{
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+
+  outputs = {nixpkgs, ...}: let
+    systems = [
+      "aarch64-darwin"
+      "aarch64-linux"
+      "armv6l-linux"
+      "armv7l-linux"
+      "x86_64-darwin"
+      "x86_64-linux"
+    ];
+    forEachSystem = nixpkgs.lib.genAttrs systems;
+
+    pkgsForEach = nixpkgs.legacyPackages;
+  in {
+    devShells = forEachSystem (system: {
+      default = pkgsForEach.${system}.callPackage ./shell.nix {};
+    });
+  };
+}

shell.nix

@@ -0,0 +1,4 @@
+{pkgs ? import <nixpkgs> {}}:
+pkgs.mkShell {
+  buildInputs = with pkgs; [jekyll];
+}