update readme, include example work profile

.example_work_profile/flake.nix

@@ -0,0 +1,29 @@
+{
+  description = "A flake to overlay private configurations on my public flake";
+
+  inputs = {
+    dotfiles.url = "github:jbowdre/dotfiles";
+  };
+
+  outputs = { self, dotfiles, nixpkgs } @inputs:
+  let
+    inherit (dotfiles) homeConfigurations homeManagerModules lib overlays packages;
+    inherit (self) outputs;
+  in
+  {
+    homeManagerModules = import "${dotfiles}/modules/home-manager";
+
+    overlays = import "${dotfiles}/overlays" { inherit inputs outputs; };
+
+    homeConfigurations = {
+      "work-user@work-system" = lib.homeManagerConfiguration {
+        modules = [
+          "${dotfiles}/home/global"
+          ./work_overrides
+        ];
+        pkgs = nixpkgs.legacyPackages.x86_64-linux;
+        extraSpecialArgs = { inherit inputs outputs; };
+      };
+    };
+  };
+}

.example_work_profile/work_overrides/default.nix

@@ -0,0 +1,24 @@
+{ pkgs, ... }: {
+  imports = [
+    ./fish.nix
+  ];
+
+  home = {
+    # username override
+    username = "work-user";
+    packages = with pkgs; [
+      packer
+      terraform
+      vagrant
+      vault
+      wsl-open
+      wslu
+    ];
+  };
+
+  programs = {
+    htop.enable = true;
+
+    git.userEmail = "work-user@company.tld";
+  };
+}

.example_work_profile/work_overrides/fish.nix

@@ -0,0 +1,13 @@
+{ pkgs, lib, config, ... }: {
+  programs.fish = {
+    # Shell overrides for work
+
+    shellAbbrs = rec {
+      putmykey = "ssh-copy-id -i ~/.ssh/id_ed25519";
+      putrootkey = "ssh-copy-id -i ~/.ssh/id_ed25519-root";
+      ssh = "ssh -i ~/.ssh/id_ed25519 -l work-user";
+      sshroot = "ssh -i ~/.ssh/id_ed25519-root -l root";
+      vpnkit = "wsl.exe -d wsl-vpnkit --cd /app service wsl-vpnkit";
+    };
+  };
+}

README.md

@@ -1,19 +1,7 @@
 # Config files
 
 ## Nix
-I've started the process of leveraging [Nix](https://nixos.org/explore.html) to manage my system configurations. This repo will (eventually?) hold files used for managing user environments with [Home Manager](https://github.com/nix-community/home-manager). The goods are in [flake.nix](./flake.nix) and the [nix](./nix/) directory.
+I've started the process of leveraging [Nix](https://nixos.org/explore.html) to manage my system configurations. This repo holds files used for managing user environments with [Home Manager](https://github.com/nix-community/home-manager). The goods are in [flake.nix](./flake.nix).
 
-It's very much a work-in-progress though so the legacy dotfile configs are below.
+I've also set this up so that I can overlay a flake stored in a private repo, say for work-specific configurations. That will allow me to use the same base configs for both work and personal machines, but with some additional work-specific stuff on top. There's an example of how I did that in [.example_work_profile](./.example_work_profile).
-## Legacy stuff
-Clone the repo:
-```sh
-git clone https://github.com/jbowdre/dotfiles.git ~/.dotfiles
-```
-Use `ln` to symlink the desired configs into your home directory:
-```sh
-ln -s ~/.dotfiles/zsh/.zshrc ~/.zshrc
-ln -s ~/.dotfiles/vim/.vimrc ~/.vimrc
-ln -s ~/.dotfiles/tmux/.tmux.conf ~/.tmux.conf
-ln -s ~/.dotfiles/pwsh/Microsoft.PowerShell_profile.ps1 ~/.config/powershell/Microsoft.PowerShell_profile.ps1
 
-```