linux init

README.md

@@ -3,7 +3,7 @@
 ## Approach
 
 This repo is the source of truth for the machine's reproducible developer
-environment:
+environment across macOS and Linux:
 
 - `home/` contains the Home Manager modules for user-facing tools
 - `config/` contains the repo-owned config trees copied from your daily setup
@@ -12,16 +12,21 @@ environment:
   that are still easier to keep in Brew on macOS
 - `home/migration.nix` contains one-time ownership handoff logic from `~/dots`
   into Home Manager so the steady-state modules can stay focused on real config
+- `lib/package-sets.nix` defines the shared CLI package subsets used by both
+  macOS and Linux hosts
 
 ## Layout
 
 - `flake.nix`: top-level flake and host wiring
 - `hosts/hari-macbook-pro/default.nix`: this machine's host config
+- `hosts/workstation/default.nix`: standalone Linux Home Manager host config
 - `modules/base.nix`: Nix settings and core packages
 - `modules/macos.nix`: macOS defaults and host-level settings
 - `modules/packages.nix`: system packages and fonts
 - `modules/homebrew.nix`: the remaining Homebrew-managed GUI apps
 - `home/`: Home Manager modules for shell, editor, CLI tools, and app config
+- `home/common.nix`: shared Home Manager imports used by macOS and Linux
+- `home/linux.nix`: Linux Home Manager entrypoint
 - `home/migration.nix`: transitional cleanup for old `~/dots` symlinks
 - `config/`: repo-owned config files consumed by Home Manager
 
@@ -57,14 +62,22 @@ Bitwarden note:
 First switch:
 
 ```bash
-nix run github:LnL7/nix-darwin/master#darwin-rebuild -- switch --flake .#hari-macbook-pro
+nix run github:LnL7/nix-darwin/master#darwin-rebuild -- switch --flake path:.#hari-macbook-pro
+```
+
+First Linux switch:
+
+```bash
+nix run github:nix-community/home-manager -- switch --flake path:.#workstation -b hm-bak
 ```
 
 After the first successful switch:
 
 ```bash
 just switch
+just switch workstation
 just build
+just build workstation
 just check
 ```
 

flake.nix

@@ -1,5 +1,5 @@
 {
-  description = "Rathi's macOS nix-darwin + Home Manager config";
+  description = "Rathi's macOS nix-darwin + Linux Home Manager config";
 
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
@@ -38,18 +38,28 @@
     nix-homebrew,
     ...
   }: let
-    system = "aarch64-darwin";
+    darwinSystem = "aarch64-darwin";
+    linuxSystem = "x86_64-linux";
     username = "rathi";
-    hostname = "hari-macbook-pro";
+    darwinHostname = "hari-macbook-pro";
-    pkgs = import nixpkgs {inherit system;};
+    linuxHostname = "workstation";
+    darwinPkgs = import nixpkgs {system = darwinSystem;};
+    linuxPkgs = import nixpkgs {
+      system = linuxSystem;
+      config.allowUnfree = true;
+    };
   in {
-    formatter.${system} = pkgs.alejandra;
+    formatter.${darwinSystem} = darwinPkgs.alejandra;
+    formatter.${linuxSystem} = linuxPkgs.alejandra;
 
-    darwinConfigurations.${hostname} = nix-darwin.lib.darwinSystem {
+    darwinConfigurations.${darwinHostname} = nix-darwin.lib.darwinSystem {
-      inherit system;
+      system = darwinSystem;
-      specialArgs = {inherit inputs self username hostname;};
+      specialArgs = {
+        inherit inputs self username;
+        hostname = darwinHostname;
+      };
       modules = [
-        ./hosts/${hostname}
+        ./hosts/${darwinHostname}
         home-manager.darwinModules.home-manager
         nix-homebrew.darwinModules.nix-homebrew
         {
@@ -57,7 +67,10 @@
 
           home-manager.useGlobalPkgs = true;
           home-manager.useUserPackages = true;
-          home-manager.extraSpecialArgs = {inherit inputs self username hostname;};
+          home-manager.extraSpecialArgs = {
+            inherit inputs self username;
+            hostname = darwinHostname;
+          };
           home-manager.backupFileExtension = "hm-bak";
           home-manager.users.${username} = import ./home;
 
@@ -70,5 +83,16 @@
         }
       ];
     };
+
+    homeConfigurations.${linuxHostname} = home-manager.lib.homeManagerConfiguration {
+      pkgs = linuxPkgs;
+      extraSpecialArgs = {
+        inherit inputs self username;
+        hostname = linuxHostname;
+      };
+      modules = [
+        ./hosts/${linuxHostname}
+      ];
+    };
   };
 }

home/common.nix

@@ -0,0 +1,24 @@
+{...}: {
+  imports = [
+    ./bat.nix
+    ./eza.nix
+    ./claude.nix
+    ./codex.nix
+    ./fzf.nix
+    ./gcloud.nix
+    ./gh.nix
+    ./ghostty.nix
+    ./git.nix
+    ./k9s.nix
+    ./lazygit.nix
+    ./migration.nix
+    ./nvim.nix
+    ./scripts.nix
+    ./tmux.nix
+    ./zsh.nix
+  ];
+
+  home.stateVersion = "24.11";
+  programs.home-manager.enable = true;
+  xdg.enable = true;
+}

home/default.nix

@@ -1,26 +1,7 @@
 {...}: {
   imports = [
-    ./bat.nix
+    ./common.nix
-    ./eza.nix
-    ./claude.nix
-    ./codex.nix
-    ./fzf.nix
-    ./gcloud.nix
-    ./gh.nix
-    ./ghostty.nix
-    ./git.nix
     ./karabiner.nix
-    ./k9s.nix
-    ./lazygit.nix
-    ./migration.nix
-    ./nvim.nix
     ./rectangle.nix
-    ./scripts.nix
-    ./tmux.nix
-    ./zsh.nix
   ];
-
-  home.stateVersion = "24.11";
-  programs.home-manager.enable = true;
-  xdg.enable = true;
 }

home/ghostty.nix

@@ -1,5 +1,6 @@
 {
   config,
+  lib,
   pkgs,
   ...
 }: let
@@ -38,8 +39,10 @@
     keybind = vim/i=deactivate_key_table
     keybind = vim/catch_all=ignore
     mouse-hide-while-typing = true
-    macos-titlebar-style = hidden
+    ${lib.optionalString pkgs.stdenv.isDarwin ''
-    macos-option-as-alt = true
+      macos-titlebar-style = hidden
+      macos-option-as-alt = true
+    ''}
     confirm-close-surface = true
     window-title-font-family = VictorMono NFM Italic
     window-padding-balance = true
@@ -52,7 +55,10 @@
 in {
   programs.ghostty = {
     enable = true;
-    package = pkgs.ghostty-bin;
+    package =
+      if pkgs.stdenv.isDarwin
+      then pkgs.ghostty-bin
+      else pkgs.ghostty;
     installBatSyntax = true;
   };
 
@@ -64,8 +70,10 @@ in {
   xdg.configFile."ghostty/themes/cozybox-dark".text = theme.renderGhostty "dark";
   xdg.configFile."ghostty/themes/cozybox-light".text = theme.renderGhostty "light";
 
-  home.file."Library/Application Support/com.mitchellh.ghostty/config.ghostty" = {
+  home.file = lib.mkIf pkgs.stdenv.isDarwin {
-    text = ghosttyConfig;
+    "Library/Application Support/com.mitchellh.ghostty/config.ghostty" = {
-    force = true;
+      text = ghosttyConfig;
+      force = true;
+    };
   };
 }

home/lazygit.nix

@@ -1,4 +1,12 @@
-{...}: {
+{
-  home.file."Library/Application Support/lazygit/config.yml".source =
+  lib,
-    ../config/lazygit/config.yml;
+  pkgs,
+  ...
+}: {
+  xdg.configFile."lazygit/config.yml".source = ../config/lazygit/config.yml;
+
+  home.file = lib.mkIf pkgs.stdenv.isDarwin {
+    "Library/Application Support/lazygit/config.yml".source =
+      ../config/lazygit/config.yml;
+  };
 }

home/linux.nix

@@ -0,0 +1,5 @@
+{...}: {
+  imports = [
+    ./common.nix
+  ];
+}

home/zsh.nix

@@ -22,43 +22,53 @@
     autosuggestion.enable = true;
     syntaxHighlighting.enable = true;
 
-    shellAliases = {
+    shellAliases =
-      co = "codex --dangerously-bypass-approvals-and-sandbox";
+      {
-      ca = "cursor-agent";
+        co = "codex --dangerously-bypass-approvals-and-sandbox";
-      cc = "claude";
+        ca = "cursor-agent";
-      ch = "claude-handoff";
+        cc = "claude";
-      cl = "clear";
+        ch = "claude-handoff";
-      gc = "git commit";
+        cl = "clear";
-      gd = "git diff";
+        gc = "git commit";
-      gk = "git checkout";
+        gd = "git diff";
-      gp = "git push";
+        gk = "git checkout";
-      gpo = "git pull origin";
+        gp = "git push";
-      gs = "git status";
+        gpo = "git pull origin";
-      ld = "lumen diff";
+        gs = "git status";
-      lg = "lazygit";
+        ld = "lumen diff";
-      nim = "nvim .";
+        lg = "lazygit";
-      sshnet = "ssh -i ~/.ssh/atlas-ssh.txt rathiharivansh@152.53.195.59";
+        nim = "nvim .";
-      tailscale = "/Applications/Tailscale.app/Contents/MacOS/Tailscale";
+        sshnet = "ssh -i ~/.ssh/atlas-ssh.txt rathiharivansh@152.53.195.59";
 
-      # nix helpers
+        # nix helpers
-      nr = "nix profile remove"; # nr <index> - remove from profile
+        nr = "nix profile remove"; # nr <index> - remove from profile
-      ns = "nix search nixpkgs"; # ns <query> - search packages
+        ns = "nix search nixpkgs"; # ns <query> - search packages
-      nls = "nix profile list"; # nls - list installed profile packages
+        nls = "nix profile list"; # nls - list installed profile packages
-      nrb = "sudo darwin-rebuild switch --flake ~/Documents/GitHub/nix"; # nrb - rebuild declarative config
+    }
-      nup = "nix flake update ~/Documents/GitHub/nix && sudo darwin-rebuild switch --flake ~/Documents/GitHub/nix"; # nup - update flake + rebuild
+    // lib.optionalAttrs pkgs.stdenv.isDarwin {
+      tailscale = "/Applications/Tailscale.app/Contents/MacOS/Tailscale";
+      nrb = "sudo darwin-rebuild switch --flake path:$HOME/Documents/GitHub/nix#hari-macbook-pro"; # nrb - rebuild declarative config
+      nup = "nix flake update $HOME/Documents/GitHub/nix && sudo darwin-rebuild switch --flake path:$HOME/Documents/GitHub/nix#hari-macbook-pro"; # nup - update flake + rebuild
+    }
+    // lib.optionalAttrs pkgs.stdenv.isLinux {
+      nrb = "nix run github:nix-community/home-manager -- switch --flake path:$HOME/Documents/GitHub/nix#workstation -b hm-bak"; # nrb - rebuild declarative config
+      nup = "nix flake update $HOME/Documents/GitHub/nix && nix run github:nix-community/home-manager -- switch --flake path:$HOME/Documents/GitHub/nix#workstation -b hm-bak"; # nup - update flake + rebuild
     };
 
-    envExtra = ''
+    envExtra =
-      if [[ -f "$HOME/.cargo/env" ]]; then
+      ''
-        . "$HOME/.cargo/env"
+        if [[ -f "$HOME/.cargo/env" ]]; then
-      fi
+          . "$HOME/.cargo/env"
-
+        fi
-      # Ghostty shell integration expects a resource directory; the Nix app
+      ''
-      # bundle lives in the store instead of /Applications.
+      + lib.optionalString pkgs.stdenv.isDarwin ''
-      export GHOSTTY_RESOURCES_DIR="${pkgs.ghostty-bin}/Applications/Ghostty.app/Contents/Resources/ghostty"
+        # Ghostty shell integration expects a resource directory; the Nix app
-
+        # bundle lives in the store instead of /Applications.
-      export MANPAGER="nvim +Man!"
+        export GHOSTTY_RESOURCES_DIR="${pkgs.ghostty-bin}/Applications/Ghostty.app/Contents/Resources/ghostty"
-    '';
+      ''
+      + ''
+        export MANPAGER="nvim +Man!"
+      '';
 
     initContent = lib.mkMerge [
       (lib.mkOrder 550 ''
@@ -88,7 +98,11 @@
         [ -s "$HOME/.bun/_bun" ] && source "$HOME/.bun/_bun"
 
         export BUN_INSTALL="$HOME/.bun"
-        export PNPM_HOME="$HOME/Library/pnpm"
+        export PNPM_HOME="${
+          if pkgs.stdenv.isDarwin
+          then "$HOME/Library/pnpm"
+          else "${config.xdg.dataHome}/pnpm"
+        }"
         bindkey -v
         typeset -U path PATH
         path=(
@@ -103,8 +117,10 @@
           "/etc/profiles/per-user/${config.home.username}/bin"
           "/run/current-system/sw/bin"
           "/nix/var/nix/profiles/default/bin"
+          ${lib.optionalString pkgs.stdenv.isDarwin ''
           "/opt/homebrew/bin"
           "/opt/homebrew/sbin"
+        ''}
           $path
         )
 

hosts/workstation/default.nix

@@ -0,0 +1,21 @@
+{
+  inputs,
+  lib,
+  pkgs,
+  username,
+  ...
+}: let
+  packageSets = import ../../lib/package-sets.nix {inherit inputs lib pkgs;};
+in {
+  imports = [
+    ../../home/linux.nix
+  ];
+
+  targets.genericLinux.enable = true;
+
+  home = {
+    inherit username;
+    homeDirectory = "/home/${username}";
+    packages = packageSets.core ++ packageSets.extras;
+  };
+}

justfile

@@ -4,11 +4,21 @@ default:
 check:
   nix --extra-experimental-features 'nix-command flakes' flake check
 
-build:
+build config='hari-macbook-pro':
-  nix --extra-experimental-features 'nix-command flakes' build .#darwinConfigurations.hari-macbook-pro.system
+  #!/usr/bin/env bash
+  if [[ "{{config}}" == "hari-macbook-pro" ]]; then
+    nix --extra-experimental-features 'nix-command flakes' build path:.#darwinConfigurations.{{config}}.system
+  else
+    nix --extra-experimental-features 'nix-command flakes' run github:nix-community/home-manager -- build --flake path:.#{{config}}
+  fi
 
-switch:
+switch config='hari-macbook-pro':
-  sudo env PATH="$PATH" nix --extra-experimental-features 'nix-command flakes' run github:LnL7/nix-darwin/master#darwin-rebuild -- switch --flake .#hari-macbook-pro
+  #!/usr/bin/env bash
+  if [[ "{{config}}" == "hari-macbook-pro" ]]; then
+    sudo env PATH="$PATH" nix --extra-experimental-features 'nix-command flakes' run github:LnL7/nix-darwin/master#darwin-rebuild -- switch --flake path:.#{{config}}
+  else
+    nix --extra-experimental-features 'nix-command flakes' run github:nix-community/home-manager -- switch --flake path:.#{{config}} -b hm-bak
+  fi
 
 fmt:
   nix --extra-experimental-features 'nix-command flakes' fmt

lib/package-sets.nix

@@ -0,0 +1,139 @@
+{
+  inputs,
+  lib,
+  pkgs,
+}: let
+  gwsPackage =
+    inputs.googleworkspace-cli.packages.${pkgs.stdenv.hostPlatform.system}.default;
+  claudePackage =
+    inputs.claudeCode.packages.${pkgs.stdenv.hostPlatform.system}.default;
+
+  memex = pkgs.stdenvNoCC.mkDerivation rec {
+    pname = "memex";
+    version = "0.3.1";
+
+    src = pkgs.fetchurl {
+      url = "https://github.com/nicosuave/memex/releases/download/v${version}/memex-${version}-macos-arm64.tar.gz";
+      hash = "sha256-OIqT0xS+8vc0dQNi+YdDXLmN8V/7AT4Q/cnvbbhZ+3s=";
+    };
+
+    dontUnpack = true;
+
+    installPhase = ''
+      tar -xzf "$src"
+      install -Dm755 memex "$out/bin/memex"
+    '';
+
+    meta = {
+      description = "Fast local history search for Claude and Codex logs";
+      homepage = "https://github.com/nicosuave/memex";
+      license = lib.licenses.mit;
+      mainProgram = "memex";
+      platforms = lib.platforms.darwin;
+    };
+  };
+
+  graphite = pkgs.stdenvNoCC.mkDerivation rec {
+    pname = "graphite";
+    version = "1.7.20";
+
+    src = pkgs.fetchurl {
+      url = "https://github.com/withgraphite/homebrew-tap/releases/download/v${version}/gt-macos-arm64";
+      hash = "sha256-ho9VQw1ic3jhG3yxNwUL0W1WvNFku9zw6DQnGehs7+8=";
+    };
+
+    dontUnpack = true;
+
+    installPhase = ''
+      install -Dm755 "$src" "$out/bin/gt"
+    '';
+
+    meta = {
+      description = "Manage stacked Git changes and submit them for review";
+      homepage = "https://graphite.dev/";
+      license = lib.licenses.agpl3Only;
+      mainProgram = "gt";
+      platforms = lib.platforms.darwin;
+    };
+  };
+
+  worktrunk = pkgs.rustPlatform.buildRustPackage rec {
+    pname = "worktrunk";
+    version = "0.23.1";
+
+    src = pkgs.fetchurl {
+      url = "https://github.com/max-sixty/worktrunk/archive/refs/tags/v${version}.tar.gz";
+      hash = "sha256-cdQDUz7to3JkriWE9i5iJ2RftJFZivw7CTwGxDZPAqw=";
+    };
+
+    cargoHash = "sha256-DHjwNqMiVkWqL3CuOCITvyqkdKe+GOZ2nlMSstDIcTg=";
+    doCheck = false;
+
+    meta = {
+      description = "CLI for Git worktree management";
+      homepage = "https://worktrunk.dev";
+      license = with lib.licenses; [asl20 mit];
+      mainProgram = "wt";
+      platforms = lib.platforms.darwin;
+    };
+  };
+in {
+  core = with pkgs; [
+    curl
+    fd
+    fzf
+    gnupg
+    go_1_26
+    jq
+    just
+    nodejs_22
+    python3
+    ripgrep
+    rustup
+    tree
+    uv
+    wget
+    zoxide
+  ];
+
+  extras =
+    (with pkgs; [
+      awscli2
+      claudePackage
+      coreutils-prefixed
+      delta
+      diff-so-fancy
+      git-filter-repo
+      git-lfs
+      goose
+      google-cloud-sdk
+      gwsPackage
+      imagemagickBig
+      kind
+      kubectl
+      kubernetes-helm
+      lazygit
+      libpq
+      librsvg
+      llmfit
+      mise
+      minikube
+      ngrok
+      postgresql_17
+      redis
+      tailscale
+      terraform
+      texliveFull
+      yt-dlp
+    ])
+    ++ lib.optionals pkgs.stdenv.isDarwin [
+      graphite
+      memex
+      worktrunk
+    ];
+
+  fonts = with pkgs; [
+    jetbrains-mono
+    nerd-fonts.symbols-only
+  ];
+}

modules/base.nix

@@ -1,8 +1,12 @@
 {
+  inputs,
+  lib,
   pkgs,
   username,
   ...
-}: {
+}: let
+  packageSets = import ../lib/package-sets.nix {inherit inputs lib pkgs;};
+in {
   nix.enable = true;
 
   nix.settings = {
@@ -31,23 +35,7 @@
   programs.zsh.enable = true;
   environment.shells = [pkgs.zsh];
 
-  environment.systemPackages = with pkgs; [
+  environment.systemPackages = packageSets.core;
-    curl
-    fd
-    fzf
-    gnupg
-    go_1_26
-    jq
-    just
-    nodejs_22
-    python3
-    ripgrep
-    rustup
-    tree
-    uv
-    wget
-    zoxide
-  ];
 
   environment.variables = {
     EDITOR = "nvim";

modules/packages.nix

@@ -4,116 +4,8 @@
   pkgs,
   ...
 }: let
-  gwsPackage =
+  packageSets = import ../lib/package-sets.nix {inherit inputs lib pkgs;};
-    inputs.googleworkspace-cli.packages.${pkgs.stdenv.hostPlatform.system}.default;
-  claudePackage =
-    inputs.claudeCode.packages.${pkgs.stdenv.hostPlatform.system}.default;
-
-  memex = pkgs.stdenvNoCC.mkDerivation rec {
-    pname = "memex";
-    version = "0.3.1";
-
-    src = pkgs.fetchurl {
-      url = "https://github.com/nicosuave/memex/releases/download/v${version}/memex-${version}-macos-arm64.tar.gz";
-      hash = "sha256-OIqT0xS+8vc0dQNi+YdDXLmN8V/7AT4Q/cnvbbhZ+3s=";
-    };
-
-    dontUnpack = true;
-
-    installPhase = ''
-      tar -xzf "$src"
-      install -Dm755 memex "$out/bin/memex"
-    '';
-
-    meta = {
-      description = "Fast local history search for Claude and Codex logs";
-      homepage = "https://github.com/nicosuave/memex";
-      license = lib.licenses.mit;
-      mainProgram = "memex";
-      platforms = lib.platforms.darwin;
-    };
-  };
-
-  graphite = pkgs.stdenvNoCC.mkDerivation rec {
-    pname = "graphite";
-    version = "1.7.20";
-
-    src = pkgs.fetchurl {
-      url = "https://github.com/withgraphite/homebrew-tap/releases/download/v${version}/gt-macos-arm64";
-      hash = "sha256-ho9VQw1ic3jhG3yxNwUL0W1WvNFku9zw6DQnGehs7+8=";
-    };
-
-    dontUnpack = true;
-
-    installPhase = ''
-      install -Dm755 "$src" "$out/bin/gt"
-    '';
-
-    meta = {
-      description = "Manage stacked Git changes and submit them for review";
-      homepage = "https://graphite.dev/";
-      license = lib.licenses.agpl3Only;
-      mainProgram = "gt";
-      platforms = lib.platforms.darwin;
-    };
-  };
-
-  worktrunk = pkgs.rustPlatform.buildRustPackage rec {
-    pname = "worktrunk";
-    version = "0.23.1";
-
-    src = pkgs.fetchurl {
-      url = "https://github.com/max-sixty/worktrunk/archive/refs/tags/v${version}.tar.gz";
-      hash = "sha256-cdQDUz7to3JkriWE9i5iJ2RftJFZivw7CTwGxDZPAqw=";
-    };
-
-    cargoHash = "sha256-DHjwNqMiVkWqL3CuOCITvyqkdKe+GOZ2nlMSstDIcTg=";
-    doCheck = false;
-
-    meta = {
-      description = "CLI for Git worktree management";
-      homepage = "https://worktrunk.dev";
-      license = with lib.licenses; [asl20 mit];
-      mainProgram = "wt";
-      platforms = lib.platforms.darwin;
-    };
-  };
 in {
-  environment.systemPackages = with pkgs; [
+  environment.systemPackages = packageSets.extras;
-    awscli2
+  fonts.packages = packageSets.fonts;
-    claudePackage
-    coreutils-prefixed
-    delta
-    diff-so-fancy
-    git-filter-repo
-    git-lfs
-    goose
-    graphite
-    google-cloud-sdk
-    gwsPackage
-    kubernetes-helm
-    imagemagickBig
-    kind
-    kubectl
-    lazygit
-    libpq
-    librsvg
-    llmfit
-    memex
-    mise
-    minikube
-    ngrok
-    postgresql_17
-    redis
-    tailscale
-    terraform
-    texliveFull
-    worktrunk
-    yt-dlp
-  ];
-
-  fonts.packages = with pkgs; [
-    jetbrains-mono
-    nerd-fonts.symbols-only
-  ];
 }