Move to a profile-based configuration where common

This patch makes it so common configuration is now located in shared/
and each host basically just becomes a bunch of import statements.

The exception here is host-specific configuration like the `*.linus.onl`
that live inside `hosts/ahmed/`.

Specifically I have:

- moved common configuration `shared/{nixos,home-manager,nix-darwin}`.
- moved `hosts/common.nix` to `shared/nixos/common-{nix,shell}-settings.nix`.
- split `hosts/muhammed/{dev-utils,neovim}` into per-language
  configuration.

This patch was done in preparation for the arrival of a new host, which
will need to share a lot of configuration with Muhammed.

1 files changed, 43 insertions, 0 deletions

diff --git a/shared/home-manager/zsh/editing.nix b/shared/home-manager/zsh/editing.nix
new file mode 100644
index 0000000..241ef3c
--- /dev/null
+++ b/shared/home-manager/zsh/editing.nix
@@ -0,0 +1,43 @@
+# This module contains all ZSH configuration related to the editing experience (e.g. setting VI mode).
+{
+  pkgs,
+  lib,
+  ...
+}: let
+  inherit (lib.strings) concatStringsSep;
+  inherit (lib.attrsets) catAttrs;
+
+  plugins = [
+    {
+      name = "zsh-vi-mode-cursor";
+      src = pkgs.fetchFromGitHub {
+        owner = "Buckmeister";
+        repo = "zsh-vi-mode-cursor";
+        rev = "fa7cc0973ee71636e906e25e782d0aea19545d60";
+        hash = "sha256-j73M4bvAoHWt5Wwg47hM0p5Or74x/3btTOPnI22SqG8=";
+      };
+    }
+  ];
+in {
+  programs.zsh = {
+    # VIM! VIM! VIM!
+    defaultKeymap = "viins";
+
+    plugins = map (p: removeAttrs p ["config"]) plugins;
+
+    initExtra = ''
+      # Set up external editing by pressing '!' in normal mode.
+      autoload -z edit-command-line
+      zle -N edit-command-line
+      bindkey -M vicmd '!' edit-command-line
+
+      # Plugins config.
+      ${concatStringsSep "\n" (catAttrs "config" plugins)}
+    '';
+  };
+
+  programs.fzf = {
+    enable = true;
+    enableZshIntegration = true;
+  };
+}