Release v3.19.0 (#1817)

* Prepare release v3.19.0

* Update test fixtures with the new nix-installer version

* flake.lock: Update

Flake lock file updates:

• Updated input 'determinate':
    'https://api.flakehub.com/f/pinned/DeterminateSystems/determinate/3.18.1/019dbc08-210a-7941-b195-710393c6fd8c/source.tar.gz' (2026-04-23)
  → 'https://api.flakehub.com/f/pinned/DeterminateSystems/determinate/3.19.0/019dd6ab-9a6f-79b1-8c34-9987e1d093e3/source.tar.gz' (2026-04-29)
• Updated input 'determinate/determinate-nixd-aarch64-darwin':
    'https://install.determinate.systems/determinate-nixd/tag/v3.18.1/macOS'
  → 'https://install.determinate.systems/determinate-nixd/tag/v3.19.0/macOS'
• Updated input 'determinate/determinate-nixd-aarch64-linux':
    'https://install.determinate.systems/determinate-nixd/tag/v3.18.1/aarch64-linux'
  → 'https://install.determinate.systems/determinate-nixd/tag/v3.19.0/aarch64-linux'
• Updated input 'determinate/determinate-nixd-x86_64-linux':
    'https://install.determinate.systems/determinate-nixd/tag/v3.18.1/x86_64-linux'
  → 'https://install.determinate.systems/determinate-nixd/tag/v3.19.0/x86_64-linux'
• Updated input 'nix':
    'https://api.flakehub.com/f/pinned/DeterminateSystems/nix-src/3.18.1/019dbc00-786e-7020-8304-a33065736bab/source.tar.gz' (2026-04-23)
  → 'https://api.flakehub.com/f/pinned/DeterminateSystems/nix-src/3.19.0/019dd5b5-57ba-7d72-be54-93608443f096/source.tar.gz' (2026-04-28)
• Updated input 'nix/nixpkgs':
    'https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.2505.811874%2Brev-daf6dc47aa4b44791372d6139ab7b25269184d55/019a3494-3498-707e-9086-1fb81badc7fe/source.tar.gz' (2025-10-27)
  → 'https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.2511.909248%2Brev-0590cd39f728e129122770c029970378a79d076a/019ce32b-8ace-7339-b129-cceaa8dd10c6/source.tar.gz' (2026-03-11)
• Updated input 'nixpkgs':
    'https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.982522%2Brev-b12141ef619e0a9c1c84dc8c684040326f27cdcc/019dac49-3fcc-79b0-85fb-7ee694b1cf62/source.tar.gz' (2026-04-18)
  → 'https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.987561%2Brev-1c3fe55ad329cbcb28471bb30f05c9827f724c76/019dd544-2f5a-70b0-a89a-cf26aa85b1a7/source.tar.gz' (2026-04-27)

* Update Cargo dependencies

* Set Cargo.toml package.version to 3.19.0

---------

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: github-actions[bot]

Cargo.lock

@@ -1,7 +1,7 @@
 [package]
 name = "nix-installer"
 description = "The Determinate Nix Installer"
-version = "3.18.1"
+version = "3.19.0"
 edition = "2021"
 resolver = "2"
 license = "LGPL-2.1"

Cargo.toml

@@ -1,5 +1,5 @@
 {
-  "version": "3.18.1",
+  "version": "3.19.0",
   "actions": [
     {
       "action": {

flake.lock

@@ -1,5 +1,5 @@
 {
-  "version": "3.18.1",
+  "version": "3.19.0",
   "actions": [
     {
       "action": {

tests/fixtures/linux/linux.json

@@ -1,5 +1,5 @@
 {
-  "version": "3.18.1",
+  "version": "3.19.0",
   "actions": [
     {
       "action": {