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, 28 insertions, 0 deletions

diff --git a/shared/home-manager/development-minimal/default.nix b/shared/home-manager/development-minimal/default.nix
new file mode 100644
index 0000000..30ef972
--- /dev/null
+++ b/shared/home-manager/development-minimal/default.nix
@@ -0,0 +1,28 @@
+# This module pulls in other HM modules which together form a minimal
+# development enviroment. It does so while taking care not to balloon the
+# closure size too much.
+{
+  pkgs,
+  lib,
+  ...
+}: {
+  imports = [
+    ../zsh
+    ../shell-utils
+
+    ../git
+    ../neovim
+    ../networking-utils
+  ];
+
+  home.packages = with pkgs; [
+    rlwrap
+    devenv
+  ];
+
+  # Add system manual pages to the search path on Darwin.
+  home.sessionVariables.MANPATH = lib.optionalString pkgs.stdenv.isDarwin "/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/share/man:/Applications/Xcode.app/Contents/Developer/usr/share/man:/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/share/man:$MANPATH";
+
+  # Add local executables/scripts to path.
+  home.sessionVariables.PATH = "$HOME/.local/bin:$PATH";
+}