chore: ignore nixfmt reformat in git blame

Reviewed-on: #80

.git-blame-ignore-revs

@@ -0,0 +1,2 @@
+# nixfmt reformat
+2231d2fc3fb4dc140c5f3257523dcdb513ac4dea

.gitignore

@@ -8,3 +8,7 @@ result-*
 
 # vim
 *.swp
+
+# devenv
+.devenv*
+devenv.local.nix

devenv.lock

@@ -0,0 +1,65 @@
+{
+  "nodes": {
+    "devenv": {
+      "locked": {
+        "dir": "src/modules",
+        "lastModified": 1790701375,
+        "narHash": "sha256-0FpLHIRDYiyo3EMTnMQSobZQknZaa3JuWo6vmMCK76o=",
+        "owner": "cachix",
+        "repo": "devenv",
+        "rev": "fe20b5cba7ab5e93ae73f956a8d3efc50e1753f4",
+        "type": "github"
+      },
+      "original": {
+        "dir": "src/modules",
+        "owner": "cachix",
+        "repo": "devenv",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "inputs": {
+        "nixpkgs-src": "nixpkgs-src"
+      },
+      "locked": {
+        "lastModified": 1789506231,
+        "narHash": "sha256-vNkJbtmqyBfFhn/HnzQo4ROuoyYWuy/allqTfJb4kMY=",
+        "owner": "cachix",
+        "repo": "devenv-nixpkgs",
+        "rev": "c2f38fe7f9e04d9aadd354d380f2bd40531d9737",
+        "type": "github"
+      },
+      "original": {
+        "owner": "cachix",
+        "ref": "rolling",
+        "repo": "devenv-nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-src": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1789370336,
+        "narHash": "sha256-6RSEDHIWQtesQKWSu5qRai8L2h4KgCgMEfJHstW99G4=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "c7def046b9a883d46974757852106483d741586f",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "devenv": "devenv",
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

devenv.nix

@@ -0,0 +1,31 @@
+{ pkgs, ... }:
+
+{
+  packages = with pkgs; [
+    # issue tracker (git.0x29a.ch)
+    tea
+
+    # nix tooling
+    nixfmt # official formatter (RFC 166 style)
+    statix # lints for nix anti-patterns
+    deadnix # finds unused bindings and arguments
+    nixd # language server
+    nvd # diff system generations
+  ];
+
+  scripts = {
+    lint.exec = ''
+      set -e
+      statix check .
+      # hardware-configuration.nix is generated; statix skips it via statix.toml
+      deadnix --fail --exclude hosts/*/hardware-configuration.nix -- .
+    '';
+    fmt.exec = ''
+      nixfmt $(git ls-files '*.nix')
+    '';
+  };
+
+  enterShell = ''
+    echo "nixconfig devenv: tea, lint, fmt"
+  '';
+}

devenv.yaml

@@ -0,0 +1,3 @@
+inputs:
+  nixpkgs:
+    url: github:cachix/devenv-nixpkgs/rolling

flake.lock

@@ -8,11 +8,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1782949081,
+        "lastModified": 1788450739,
-        "narHash": "sha256-vp6Y/Grm98ESt6ceOkWiHWyZRDV3J1RID4w+6NWK9yA=",
+        "narHash": "sha256-glZLQlzIn1fXH6PazR2iUmTo7kzzyYSshrWhLS9TqCU=",
         "owner": "hercules-ci",
         "repo": "flake-parts",
-        "rev": "17c9d6cdfc60c64f4ee8d306f9bc0b4ccb51481e",
+        "rev": "31729ca8cbdb4fa927b34e5f4353e6a83f39e993",
         "type": "github"
       },
       "original": {
@@ -28,11 +28,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1785958398,
+        "lastModified": 1790819692,
-        "narHash": "sha256-5r/JgsoNMTx+qIh83WkxpujEKBR7PF5ssnh5vYCuSAw=",
+        "narHash": "sha256-rvubAPbh3QCliic3sAK+CXTrPCGgJstY52OTs/5H1J4=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "a7c70cc290290f373f50cd820403833d250459ac",
+        "rev": "c8ecc29e5175452bee4a2aa1ba2383856d795338",
         "type": "github"
       },
       "original": {
@@ -43,11 +43,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1785967620,
+        "lastModified": 1790689126,
-        "narHash": "sha256-IItrdb7Puk05RqOBWZYFC5X6Wl1sJmCfh5MWVHw5iMM=",
+        "narHash": "sha256-ilerN1WLSvF+HMjziC/Wv99J5y02maDH+6hZPwsORKg=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "b7c2ada94fe99c15b0dbcf4d11fd7850b957a436",
+        "rev": "b4fd65b198c599cbe814fcb9f42d25d021595ec9",
         "type": "github"
       },
       "original": {
@@ -66,11 +66,11 @@
         "systems": "systems"
       },
       "locked": {
-        "lastModified": 1785763201,
+        "lastModified": 1790541651,
-        "narHash": "sha256-wA373y/B9orM3HatLu9oS+Ke5lmdZyBl/bdjd2gLMq4=",
+        "narHash": "sha256-/496IQz8qNWHHLnc3Zvr0l4uxJ34igNhJhn7ZKAefFk=",
         "owner": "nix-community",
         "repo": "nixvim",
-        "rev": "c7be49306b23a952c0151cf4bbeacd944ed82f2a",
+        "rev": "5980a626794486abad69fca7667f9c11dfbc3bd7",
         "type": "github"
       },
       "original": {
@@ -86,11 +86,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1786013897,
+        "lastModified": 1790718664,
-        "narHash": "sha256-u14Iaus6ROW6IWQUNGZ/IZJ3TcIUs1ngxn5sUMNnwMM=",
+        "narHash": "sha256-LWil4xgSyqIFZ9sydvL1glFOoiqAOknWUwykC4sqxuY=",
         "owner": "noctalia-dev",
         "repo": "noctalia-shell",
-        "rev": "0247e4c5e5268f8c2a5658b60b97cb5f2eca7766",
+        "rev": "fd9759c892fe5034b682c185695f1bee121cd5b3",
         "type": "github"
       },
       "original": {
@@ -108,6 +108,7 @@
       }
     },
     "systems": {
+      "flake": false,
       "locked": {
         "lastModified": 1774449309,
         "narHash": "sha256-brhZ8DmuGtzkCYHJg4HEd602amKm89Y9ytsFZ5uWD1w=",

flake.nix

@@ -17,9 +17,17 @@
     };
   };
 
-  outputs = { self, nixpkgs, home-manager, nixvim, ... }@inputs:
+  outputs =
+    {
+      nixpkgs,
+      home-manager,
+      nixvim,
+      ...
+    }@inputs:
     let
-    mkHost = hostName: nixpkgs.lib.nixosSystem {
+      mkHost =
+        hostName:
+        nixpkgs.lib.nixosSystem {
           system = "x86_64-linux";
           specialArgs = { inherit inputs; };
           modules = [
@@ -35,7 +43,8 @@
             }
           ];
         };
-  in {
+    in
+    {
       nixosConfigurations = {
         default = mkHost "default";
         neon = mkHost "neon";

hosts/argon/configuration.nix

@@ -1,5 +1,3 @@
-{ config, pkgs, inputs, ... }:
-
 {
   imports = [
     ../../modules/nixos/appimage.nix
@@ -11,7 +9,6 @@
     ../../modules/nixos/claudecode.nix
     ../../modules/nixos/drives.nix
     ../../modules/nixos/gnupg.nix
-    ../../modules/nixos/gnuradio.nix
     ../../modules/nixos/graphics.nix
     ../../modules/nixos/greetd.nix
     ../../modules/nixos/locales.nix
@@ -35,4 +32,3 @@
   # install state version
   system.stateVersion = "25.11"; # Don't change
 }
-

hosts/argon/hardware-configuration.nix

@@ -1,37 +1,53 @@
 # Do not modify this file!  It was generated by ‘nixos-generate-config’
 # and may be overwritten by future invocations.  Please make changes
 # to /etc/nixos/configuration.nix instead.
-{ config, lib, pkgs, modulesPath, ... }:
+{
+  config,
+  lib,
+  pkgs,
+  modulesPath,
+  ...
+}:
 
 {
-  imports =
+  imports = [
-    [ (modulesPath + "/installer/scan/not-detected.nix")
+    (modulesPath + "/installer/scan/not-detected.nix")
   ];
 
-  boot.initrd.availableKernelModules = [ "nvme" "xhci_pci" "ahci" "usbhid" "usb_storage" "sd_mod" ];
+  boot.initrd.availableKernelModules = [
+    "nvme"
+    "xhci_pci"
+    "ahci"
+    "usbhid"
+    "usb_storage"
+    "sd_mod"
+  ];
   boot.initrd.kernelModules = [ "dm-crypt dm-mod" ];
   boot.initrd.luks.devices."cryptroot".device = "/dev/disk/by-label/nixcrypt";
   boot.kernelModules = [ ];
   boot.extraModulePackages = [ ];
 
-  fileSystems."/" =
+  fileSystems."/" = {
-    { device = "/dev/mapper/lvmroot-root";
+    device = "/dev/mapper/lvmroot-root";
     fsType = "ext4";
   };
 
-  fileSystems."/boot" =
+  fileSystems."/boot" = {
-    { device = "/dev/disk/by-uuid/AC1C-20EB";
+    device = "/dev/disk/by-uuid/AC1C-20EB";
     fsType = "vfat";
-      options = [ "fmask=0022" "dmask=0022" ];
+    options = [
+      "fmask=0022"
+      "dmask=0022"
+    ];
   };
 
-  fileSystems."/home" =
+  fileSystems."/home" = {
-    { device = "/dev/mapper/lvmroot-home";
+    device = "/dev/mapper/lvmroot-home";
     fsType = "ext4";
   };
 
-  swapDevices =
+  swapDevices = [
-    [ { device = "/dev/mapper/lvmroot-swap"; }
+    { device = "/dev/mapper/lvmroot-swap"; }
   ];
 
   nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";

hosts/default/configuration.nix

@@ -1,10 +1,13 @@
 # 0x29a nixos conifg
 
-{ pkgs, lib, ... }:
+{ pkgs, ... }:
 
 {
   # use flakes
-  nix.settings.experimental-features = [ "nix-command" "flakes" ];
+  nix.settings.experimental-features = [
+    "nix-command"
+    "flakes"
+  ];
 
   # configure bootloader
   boot.loader.systemd-boot.enable = false;
@@ -60,7 +63,8 @@
 
     windowManager.qtile = {
       enable = true;
-      extraPackages = python3Packages: with python3Packages; [
+      extraPackages =
+        python3Packages: with python3Packages; [
           qtile-extras
         ];
     };
@@ -97,7 +101,10 @@
     autosuggestions.enable = true;
     ohMyZsh = {
       enable = true;
-      plugins = [ "git" "sudo" ];
+      plugins = [
+        "git"
+        "sudo"
+      ];
       theme = "agnoster";
     };
   };
@@ -130,4 +137,3 @@
   # install state version
   system.stateVersion = "25.05"; # Don't change
 }
-

hosts/default/hardware-configuration.nix

@@ -1,35 +1,55 @@
 # 0x29a nixos hardware configuration
 
-{ config, lib, pkgs, modulesPath, ... }:
+{
+  config,
+  lib,
+  pkgs,
+  modulesPath,
+  ...
+}:
 
 {
-  imports =
+  imports = [
-    [ (modulesPath + "/profiles/qemu-guest.nix")
+    (modulesPath + "/profiles/qemu-guest.nix")
   ];
 
   # boot and initrd configs
-  boot.initrd.availableKernelModules = [ "uhci_hcd" "ehci_pci" "ahci" "virtio_pci" "virtio_scsi" "sd_mod" "sr_mod" ];
+  boot.initrd.availableKernelModules = [
-  boot.initrd.kernelModules = [ "dm-snapshot" "cryptd" ];
+    "uhci_hcd"
+    "ehci_pci"
+    "ahci"
+    "virtio_pci"
+    "virtio_scsi"
+    "sd_mod"
+    "sr_mod"
+  ];
+  boot.initrd.kernelModules = [
+    "dm-snapshot"
+    "cryptd"
+  ];
   boot.kernelModules = [ ];
   boot.extraModulePackages = [ ];
   boot.initrd.luks.devices."cryptroot".device = "/dev/disk/by-label/nixcrypt";
 
   # file systems
-  fileSystems."/" =
+  fileSystems."/" = {
-    { device = "/dev/disk/by-label/nixroot";
+    device = "/dev/disk/by-label/nixroot";
     fsType = "ext4";
   };
-  fileSystems."/boot" =
+  fileSystems."/boot" = {
-    { device = "/dev/disk/by-label/nixboot";
+    device = "/dev/disk/by-label/nixboot";
     fsType = "vfat";
-      options = [ "fmask=0022" "dmask=0022" ];
+    options = [
+      "fmask=0022"
+      "dmask=0022"
+    ];
   };
-  fileSystems."/home" =
+  fileSystems."/home" = {
-    { device = "/dev/disk/by-label/nixhome";
+    device = "/dev/disk/by-label/nixhome";
     fsType = "ext4";
   };
-  swapDevices =
+  swapDevices = [
-    [ { device = "/dev/disk/by-label/nixswap"; }
+    { device = "/dev/disk/by-label/nixswap"; }
   ];
 
   # enable dhcp on all interfaces

hosts/default/home.nix

@@ -1,4 +1,4 @@
-{ config, pkgs, ... }:
+{ pkgs, ... }:
 
 {
   # user config
@@ -29,7 +29,6 @@
     iotop
     iftop
     strace
-    ltrace
     lsof
     sysstat
     lm_sensors
@@ -51,12 +50,16 @@
     syntaxHighlighting.enable = true;
     oh-my-zsh = {
       enable = true;
-      plugins = [ "git" "sudo" "python" "ansible" ];
+      plugins = [
+        "git"
+        "sudo"
+        "python"
+        "ansible"
+      ];
       theme = "agnoster";
     };
   };
 
-
   ## deploy qtile config
   #home.file."qtile-config" = {
   #  target = ".config/qtile/config.py";

hosts/neon/configuration.nix

@@ -1,5 +1,3 @@
-{ config, pkgs, inputs, ... }:
-
 {
   imports = [
     ../../modules/nixos/appimage.nix
@@ -31,4 +29,3 @@
   # install state version
   system.stateVersion = "25.11"; # Don't change
 }
-

hosts/neon/hardware-configuration.nix

@@ -1,38 +1,56 @@
 # Do not modify this file!  It was generated by ‘nixos-generate-config’
 # and may be overwritten by future invocations.  Please make changes
 # to /etc/nixos/configuration.nix instead.
-{ config, lib, pkgs, modulesPath, ... }:
+{
+  config,
+  lib,
+  pkgs,
+  modulesPath,
+  ...
+}:
 
 {
-  imports =
+  imports = [
-    [ (modulesPath + "/installer/scan/not-detected.nix")
+    (modulesPath + "/installer/scan/not-detected.nix")
   ];
 
-  boot.initrd.availableKernelModules = [ "xhci_pci" "nvme" "usb_storage" "sd_mod" "rtsx_pci_sdmmc" ];
+  boot.initrd.availableKernelModules = [
-  boot.initrd.kernelModules = [ "dm-snapshot" "cryptd" ];
+    "xhci_pci"
+    "nvme"
+    "usb_storage"
+    "sd_mod"
+    "rtsx_pci_sdmmc"
+  ];
+  boot.initrd.kernelModules = [
+    "dm-snapshot"
+    "cryptd"
+  ];
   boot.initrd.luks.devices."cryptroot".device = "/dev/disk/by-label/nixcrypt";
 
   boot.kernelModules = [ "kvm-intel" ];
   boot.extraModulePackages = [ ];
 
-  fileSystems."/" =
+  fileSystems."/" = {
-    { device = "/dev/disk/by-label/nixroot";
+    device = "/dev/disk/by-label/nixroot";
     fsType = "ext4";
   };
 
-  fileSystems."/boot" =
+  fileSystems."/boot" = {
-    { device = "/dev/disk/by-label/nixboot";
+    device = "/dev/disk/by-label/nixboot";
     fsType = "vfat";
-      options = [ "fmask=0022" "dmask=0022" ];
+    options = [
+      "fmask=0022"
+      "dmask=0022"
+    ];
   };
 
-  fileSystems."/home" =
+  fileSystems."/home" = {
-    { device = "/dev/disk/by-label/nixhome";
+    device = "/dev/disk/by-label/nixhome";
     fsType = "ext4";
   };
 
-  swapDevices =
+  swapDevices = [
-    [ { device = "/dev/disk/by-label/nixswap"; }
+    { device = "/dev/disk/by-label/nixswap"; }
   ];
 
   networking.useDHCP = lib.mkDefault true;

modules/home-manager/fonts.nix

@@ -1,4 +1,4 @@
-{ config, pkgs, inputs, ... }:
+{ pkgs, ... }:
 
 {
   # user fonts

modules/home-manager/ghostty.nix

@@ -1,5 +1,3 @@
-{ config, pkgs, inputs, ... }:
-
 {
   programs.ghostty = {
     enable = true;

modules/home-manager/git.nix

@@ -1,17 +1,46 @@
-{ config, pkgs, inputs, ... }:
-
 {
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+
+let
+  email = "aaron@0x29a.ch";
+
+  # public half of every machine's ~/.ssh/id_ed25519, each one verified as a
+  # signing key in gitea. the key a host signs with is picked up from the key
+  # file itself, this list only tells the local git which machines to trust
+  signingKeys = [
+    "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIHRhwzo1oxaT3fEySSmILKNnu9v30cfjx5G7FKpmfqeX aaron@argon"
+    "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIGDkhvvTUcBSQdtXjX+Mw2Bp8HHhtiBm8aJi4ZxiBgZR aaron@neon"
+  ];
+in
+{
+  # gitea verifies signatures against the account keys, this teaches the local
+  # git the same trust so `git log --show-signature` resolves as well
+  xdg.configFile."git/allowed_signers".text = lib.concatMapStrings (
+    key: "${email} ${key}\n"
+  ) signingKeys;
+
   programs.git = {
     enable = true;
     settings = {
-      push = { autoSetupRemote = true; };
+      push = {
+        autoSetupRemote = true;
+      };
       user = {
         name = "aaron";
-        email = "aaron@0x29a.ch";
+        inherit email;
       };
+      gpg.ssh.allowedSignersFile = "${config.xdg.configHome}/git/allowed_signers";
     };
     signing = {
-      key = "7A830180A05DAC59CDE43B0677D2F5DB48184456";
+      format = "ssh";
+      # point at the *public* key so ssh-keygen signs through the ssh agent
+      # instead of reading the passphrase protected private key from disk
+      key = "${config.home.homeDirectory}/.ssh/id_ed25519.pub";
+      signer = "${pkgs.openssh}/bin/ssh-keygen";
       signByDefault = true;
     };
   };

modules/home-manager/nixvim.nix

@@ -1,4 +1,4 @@
-{ config, pkgs, inputs, ... }:
+{ pkgs, inputs, ... }:
 
 {
   programs.nixvim = {
@@ -67,7 +67,11 @@
     };
     plugins.treesitter = {
       enable = true;
-      settings.ensure_installed = [ "markdown" "markdown_inline" "typst" ];
+      settings.ensure_installed = [
+        "markdown"
+        "markdown_inline"
+        "typst"
+      ];
     };
     plugins.typst-preview = {
       enable = true;
@@ -87,7 +91,11 @@
       enable = true;
       settings = {
         # render in normal mode, raw source in insert
-        render_modes = [ "n" "c" "t"];
+        render_modes = [
+          "n"
+          "c"
+          "t"
+        ];
         pipe_table.preset = "round";
         heading.width = "block";
         file_types = [ "markdown" ];

modules/home-manager/noctalia.nix

@@ -1,14 +1,15 @@
-{ config, pkgs, inputs, ... }:
+{ pkgs, inputs, ... }:
 
 {
-  # Noctalia v5 shell, managed via its upstream home-manager module.
+  # Noctalia v5 shell, managed via home-manager's built-in programs.noctalia module.
+  # The noctalia flake's homeModules.default is not imported: it redeclares the same
+  # options and its disabledModules path ("programs/noctalia.nix") doesn't match HM's.
   # See https://docs.noctalia.dev/v5/getting-started/nixos/
-  imports = [ inputs.noctalia.homeModules.default ];
 
   programs.noctalia = {
     enable = true;
 
-    # The module's `package` option has no default, so it must be set explicitly.
+    # Use the package from the noctalia flake rather than nixpkgs.
     package = inputs.noctalia.packages.${pkgs.stdenv.hostPlatform.system}.default;
 
     # settings is rendered to ~/.config/noctalia/config.toml
@@ -72,9 +73,22 @@
           radius = 0;
           scale = 1.2;
           widget_spacing = 20;
-          start = [ "control-center" "cpu" "ram" "temp" "active_window" ];
+          start = [
+            "control-center"
+            "cpu"
+            "ram"
+            "temp"
+            "active_window"
+          ];
           center = [ "workspaces" ];
-          end = [ "tray" "bluetooth" "notifications" "volume" "network" "clock" ];
+          end = [
+            "tray"
+            "bluetooth"
+            "notifications"
+            "volume"
+            "network"
+            "clock"
+          ];
         };
       };
 
@@ -102,7 +116,11 @@
 
       # idle behavior
       idle = {
-        behavior_order = [ "screen-off" "lock" "lock-and-suspend" ];
+        behavior_order = [
+          "screen-off"
+          "lock"
+          "lock-and-suspend"
+        ];
         behavior = {
           "screen-off" = {
             enabled = true;

modules/home-manager/programs.nix

@@ -1,4 +1,4 @@
-{ config, pkgs, inputs, ... }:
+{ config, pkgs, ... }:
 
 {
   # user packages

modules/home-manager/shell.nix

@@ -1,4 +1,4 @@
-{ config, lib, pkgs, inputs, ... }:
+{ lib, ... }:
 
 {
   # configure z-shell to use omz with some plugins
@@ -9,7 +9,11 @@
     oh-my-zsh = {
       enable = true;
       # add git and agents as plugins
-      plugins = [ "git" "ssh-agent" "gpg-agent" ];
+      plugins = [
+        "git"
+        "ssh-agent"
+        "gpg-agent"
+      ];
       # everything here lands before `source $ZSH/oh-my-zsh.sh`
       extraConfig = ''
         # make omz faster on large repositories
@@ -23,6 +27,35 @@
         fi
       '';
     };
+
+    # Unlike oh-my-zsh.extraConfig above, this lands *after*
+    # `source $ZSH/oh-my-zsh.sh`, which is where the theme's prompt functions
+    # come into existence.
+    initContent = lib.mkAfter ''
+      # Keep the prompt on one line in deeply nested trees.
+      #
+      # Both themes render the working directory as `%~`, the full path with
+      # $HOME collapsed to `~`. Somewhere like
+      # ~/git/bfh/cas-pml-sem/documents/bericht that is 39 columns on its own,
+      # and together with user@host and a long branch name the line wraps.
+      #
+      # `%(4~|…/%2~|%~)` is a prompt ternary: at four or more components show
+      # an ellipsis and the last two, otherwise show the path whole. Short
+      # paths like ~/git/nixconfig are left alone.
+      if [[ "$ZSH_THEME" == "agnoster" ]]; then
+        # agnoster calls prompt_dir on every render, so redefining it is
+        # enough. AGNOSTER_DIR_* keep the segment's own colours.
+        prompt_dir() {
+          prompt_segment "$AGNOSTER_DIR_BG" "$AGNOSTER_DIR_FG" '%(4~|…/%2~|%~)'
+        }
+      else
+        # gentoo builds PROMPT once at load time, so patch the string. Its
+        # `%~` is the non-root branch of `%(!.%1~.%~)`, and it is the first
+        # literal `%~` in there, so the root branch is untouched. ASCII `...`
+        # because this branch is the Linux console, whose font may lack U+2026.
+        PROMPT="''${PROMPT/\%~/%(4~|.../%2~|%~)}"
+      fi
+    '';
   };
 
   # set important env vars

modules/home-manager/styling.nix

@@ -1,4 +1,4 @@
-{ config, pkgs, inputs, ... }:
+{ pkgs, ... }:
 
 {
   # set gtk theme

modules/home-manager/tmux.nix

@@ -1,5 +1,3 @@
-{ config, pkgs, inputs, ... }:
-
 let
   # Powerline separators, U+E0B0..U+E0B3.
   #

modules/nixos/appimage.nix

@@ -1,5 +1,3 @@
-{ config, lib, pkgs, ... }:
-
 {
   # AppImages ship a squashfs payload that the bundled runtime mounts through
   # libfuse.so.2 at startup. nix-ld resolves the ELF interpreter but not that

modules/nixos/astro.nix

@@ -1,4 +1,4 @@
-{ config, lib, pkgs, ... }:
+{ lib, pkgs, ... }:
 
 let
   # Siril's Python plugins (sirilpy) run in a venv that pip-installs foreign
@@ -15,7 +15,15 @@ let
     # on PATH. nixpkgs only *propagates* python3 from the siril derivation (it
     # isn't on the runtime PATH), so without the --prefix PATH below the GUI
     # fails with "Python not found in system PATH" and never creates
-    # ~/.local/share/siril/venv. We add the same interpreter siril references.
+    # ~/.local/share/siril/venv.
+    #
+    # We deliberately do NOT put ${pkgs.python3}/bin on PATH directly: `venv`
+    # symlinks bin/python3 to whatever sys.executable was, so the venv would
+    # hard-link a /nix/store hash that gets garbage-collected after the next
+    # python bump, leaving a dangling symlink ("Error finding venv python
+    # path, unable to spawn python"). Instead we go through the stable
+    # /etc/siril/bin/python3 symlink (see environment.etc below), which NixOS
+    # re-points at the current python on every rebuild.
     #
     # The VeraLux PyQt6 wheel ships only the built-in Windows/Fusion styles, so
     # the global QT_STYLE_OVERRIDE=adwaita-dark (inherited from the session) is
@@ -26,9 +34,12 @@ let
     # ignored again (harmless warning + Fusion fallback, no loss of function).
     postBuild = ''
       wrapProgram $out/bin/siril \
-        --prefix PATH : ${lib.makeBinPath [ pkgs.python3 ]} \
+        --prefix PATH : /etc/siril/bin \
         --prefix QT_PLUGIN_PATH : ${pkgs.adwaita-qt6}/lib/qt-6/plugins \
-        --prefix LD_LIBRARY_PATH : ${lib.makeLibraryPath (with pkgs; [
+        --prefix LD_LIBRARY_PATH : ${
+          lib.makeLibraryPath (
+            with pkgs;
+            [
               stdenv.cc.cc.lib # libstdc++ / libgcc_s / libgomp  (numpy etc.)
               zlib
               zstd # libzstd.so.1                     (PyQt6)
@@ -51,7 +62,9 @@ let
               libxcb-image
               libxcb-keysyms
               libxcb-render-util
-        ])}
+            ]
+          )
+        }
     '';
   };
 in
@@ -62,6 +75,10 @@ in
     sirilWithPlugins
   ];
 
+  # Stable, GC-safe interpreter path for Siril's venv (see sirilWithPlugins).
+  # Same python as siril itself propagates, so sirilpy's ABI matches.
+  environment.etc."siril/bin/python3".source = "${pkgs.python3}/bin/python3";
+
   # StarNet++ has no nixpkgs package. Download the StarNet v2 ORT CLI build
   # (starnet2_linux_*_ORT_x64_cli) from https://www.starnetastro.com/download/
   # and unzip it to ~/.local/share/siril/starnet/. Then in Siril set

modules/nixos/audio.nix

@@ -1,5 +1,3 @@
-{ config, lib, pkgs, ... }:
-
 {
   # enable sound through pipewire
   services.pipewire = {

modules/nixos/bootloader.nix

@@ -1,4 +1,4 @@
-{ config, lib, pkgs, ... }:
+{ pkgs, ... }:
 
 {
   # set bootloader to systemd
@@ -17,7 +17,10 @@
   };
 
   # kernel options
-  boot.kernelParams = [ "quiet" "acpi.debug_level=0" ];
+  boot.kernelParams = [
+    "quiet"
+    "acpi.debug_level=0"
+  ];
   boot.kernelPackages = pkgs.linuxPackages_latest;
   boot.consoleLogLevel = 2;
 

modules/nixos/calibre.nix

@@ -1,4 +1,4 @@
-{ config, lib, pkgs, ... }:
+{ pkgs, ... }:
 
 {
   # install calibre for ebook management and kobo syncing

modules/nixos/certificates.nix

@@ -1,5 +1,3 @@
-{ config, lib, pkgs, ... }:
-
 let
   caddyRootCA = ''
     -----BEGIN CERTIFICATE-----

modules/nixos/claudecode.nix

@@ -1,4 +1,4 @@
-{ config, lib, pkgs, ... }:
+{ pkgs, ... }:
 
 {
   environment.systemPackages = with pkgs; [

modules/nixos/docker.nix

@@ -1,4 +1,4 @@
-{ config, lib, pkgs, ...}:
+{ pkgs, ... }:
 
 {
   # add docker group to user
@@ -8,7 +8,10 @@
     enable = true;
     # Customize Docker daemon settings
     daemon.settings = {
-      dns = [ "1.1.1.1" "8.8.8.8" ];
+      dns = [
+        "1.1.1.1"
+        "8.8.8.8"
+      ];
       log-driver = "journald";
       registry-mirrors = [ "https://mirror.gcr.io" ];
       storage-driver = "overlay2";

modules/nixos/drives.nix

@@ -1,5 +1,3 @@
-{ config, lib, pkgs, ... }:
-
 # Add encrypted drives to argon
 
 {

modules/nixos/gnupg.nix

@@ -1,15 +1,31 @@
-{ config, lib, pkgs, ... }:
+{ config, pkgs, ... }:
 
 {
   # enable gnupg agent
   programs.gnupg.agent = {
     enable = true;
-    enableSSHSupport = true;
+    # a graphical pinentry never grabs the tty, so a passphrase prompt can no
-    pinentryPackage = pkgs.pinentry-curses;
+    # longer take over a terminal that a coding agent is driving
+    pinentryPackage = pkgs.pinentry-qt;
+    settings = {
+      # keep the key unlocked for a full working day instead of 10 minutes,
+      # so signing commits asks at most once per session
+      default-cache-ttl = 86400;
+      max-cache-ttl = 86400;
+      # fail an unattended signature instead of blocking on a prompt forever
+      pinentry-timeout = 120;
+    };
   };
 
   environment.systemPackages = with pkgs; [
     gnupg
+    pinentry-qt
+    # fallback for sessions without a display, switch pinentryPackage to use it
     pinentry-curses
+    # prime the passphrase cache on demand, e.g. before an agent session
+    (writeShellScriptBin "gpg-unlock" ''
+      echo | ${config.programs.gnupg.package}/bin/gpg --clearsign --output /dev/null
+      echo "gpg key unlocked"
+    '')
   ];
 }

modules/nixos/gnuradio.nix

@@ -1,4 +1,4 @@
-{ config, lib, pkgs, ... }:
+{ pkgs, ... }:
 
 {
   # install gnuradio companion along with it's osmocom library

modules/nixos/graphics.nix

@@ -1,4 +1,4 @@
-{ config, lib, pkgs, ... }:
+{ pkgs, ... }:
 
 {
   # enable amd GPU acceleration (mesa, vulkan, egl)

modules/nixos/greetd.nix

@@ -1,4 +1,4 @@
-{ config, lib, pkgs, ... }:
+{ pkgs, ... }:
 
 {
   # greetd display manager with tuigreet

modules/nixos/locales.nix

@@ -1,5 +1,3 @@
-{ config, lib, pkgs, ... }:
-
 {
   # set the time zone
   time.timeZone = "Europe/Zurich";

modules/nixos/networking.nix

@@ -1,4 +1,4 @@
-{ config, lib, pkgs, ... }:
+{ pkgs, ... }:
 
 {
   # user networkmanager

modules/nixos/niri.nix

@@ -1,4 +1,4 @@
-{ config, lib, pkgs, ... }:
+{ pkgs, ... }:
 
 {
   # just enable and install niri

modules/nixos/noctalia.nix

@@ -1,4 +1,4 @@
-{ config, lib, pkgs, inputs, ... }:
+{ pkgs, inputs, ... }:
 {
   # install noctalia and helper packages
   environment.systemPackages = with pkgs; [
@@ -9,5 +9,6 @@
     brightnessctl
     ddcutil
     playerctl
+    wl-mirror
   ];
 }

modules/nixos/openssh.nix

@@ -1,5 +1,3 @@
-{ config, lib, pkgs, ... }:
-
 {
   # enable the openssh daemon
   services.openssh = {

modules/nixos/packages.nix

@@ -1,4 +1,4 @@
-{ config, lib, pkgs, ... }:
+{ pkgs, ... }:
 
 {
   # system packages
@@ -18,7 +18,6 @@
     ldns
     lm_sensors
     lsof
-    ltrace
     mtr
     neovim
     nfs-utils

modules/nixos/protonvpn.nix

@@ -1,4 +1,4 @@
-{ config, lib, pkgs, ... }:
+{ pkgs, ... }:
 
 {
   # protonvpn uses wireguard tunnels, which break strict reverse path filtering

modules/nixos/sddm.nix

@@ -1,4 +1,4 @@
-{ config, lib, pkgs, ... }:
+{ pkgs, ... }:
 
 {
   # enable sddm and use astronaut theme

modules/nixos/services.nix

@@ -1,5 +1,3 @@
-{ config, lib, pkgs, ... }:
-
 {
   # list of enabled services on the system
   services = {

modules/nixos/settings.nix

@@ -1,11 +1,12 @@
-{ config, lib, pkgs, ... }:
-
 {
   nix = {
     # nix settings
     settings = {
       # enable flakes and nix-command
-      experimental-features = [ "nix-command" "flakes" ];
+      experimental-features = [
+        "nix-command"
+        "flakes"
+      ];
       # auto-optimize my nix-store
       auto-optimise-store = true;
       # use all cores
@@ -33,7 +34,10 @@
   };
 
   # add trusted users (able to modify the nix store)
-  nix.settings.trusted-users = [ "root" "@wheel" ];
+  nix.settings.trusted-users = [
+    "root"
+    "@wheel"
+  ];
 
   # allow unfree packages (steam, protonvpn, discord, etc.)
   nixpkgs.config.allowUnfree = true;

modules/nixos/steam.nix

@@ -1,4 +1,4 @@
-{ config, lib, pkgs, ... }:
+{ pkgs, ... }:
 
 {
   # enable steam and open firewall

modules/nixos/thunar.nix

@@ -1,4 +1,4 @@
-{ config, lib, pkgs, ... }:
+{ pkgs, ... }:
 
 {
   # Enable Thunar

modules/nixos/users.nix

@@ -1,11 +1,15 @@
-{ config, lib, pkgs, ... }:
+{ pkgs, ... }:
 
 {
   # create users
   users.users.aaron = {
     isNormalUser = true;
     group = "users";
-    extraGroups = [ "wheel" "networkmanager" "dialout" ];
+    extraGroups = [
+      "wheel"
+      "networkmanager"
+      "dialout"
+    ];
     shell = pkgs.zsh;
   };
 

modules/nixos/vial.nix

@@ -1,4 +1,4 @@
-{ config, lib, pkgs, ... }:
+{ pkgs, ... }:
 
 {
   # Vial-capable keyboards (lily58 pro r2g) expose a second, non-keyboard raw

statix.toml

@@ -0,0 +1,8 @@
+# statix configuration (run via `lint` in the devenv)
+
+# Flat assignments like `boot.loader = ...; boot.plymouth = ...;` are the
+# preferred style in this repo, so don't ask for them to be merged.
+disabled = [ "repeated_keys" ]
+
+# Generated by nixos-generate-config, not maintained by hand.
+ignore = [ "hosts/*/hardware-configuration.nix" ]

users/aaron/home.nix

@@ -1,5 +1,3 @@
-{ config, pkgs, ... }:
-
 {
   imports = [
     ../../modules/home-manager/fonts.nix