distrobox: add settings option and other general improvements

tests/modules/programs/distrobox/assert-containers-systemd-unit.nix

@@ -0,0 +1,10 @@
+{
+  programs.distrobox = {
+    enable = true;
+    enableSystemdUnit = true;
+  };
+
+  test.asserts.assertions.expected = [
+    "Cannot set `programs.distrobox.enableSystemdUnit` if `programs.distrobox.containers` is unset."
+  ];
+}

tests/modules/programs/distrobox/assert-package-systemd-unit.nix

@@ -0,0 +1,18 @@
+{
+  programs.distrobox = {
+    enable = true;
+    package = null;
+    enableSystemdUnit = true;
+    containers = {
+      python-project = {
+        image = "fedora:40";
+        additional_packages = "python3 git";
+        init_hooks = "pip3 install numpy pandas torch torchvision";
+      };
+    };
+  };
+
+  test.asserts.assertions.expected = [
+    "Cannot set `programs.distrobox.enableSystemdUnit` if `programs.distrobox.package` is set to null."
+  ];
+}

tests/modules/programs/distrobox/default.nix

@@ -1,4 +1,7 @@
 { lib, pkgs, ... }:
 lib.optionalAttrs pkgs.stdenv.hostPlatform.isLinux {
   distrobox-example-config = ./example-config.nix;
+  distrobox-no-asserts = ./no-asserts.nix;
+  distrobox-assert-package-systemd-unit = ./assert-package-systemd-unit.nix;
+  distrobox-assert-containers-systemd-unit = ./assert-containers-systemd-unit.nix;
 }

tests/modules/programs/distrobox/distrobox.conf

@@ -0,0 +1,12 @@
+container_additional_volumes="/example:/example1 /example2:/example3:ro"
+container_always_pull="1"
+container_generate_entry=0
+container_image_default="registry.opensuse.org/opensuse/toolbox:latest"
+container_init_hook="~/.local/distrobox/a_custom_default_init_hook.sh"
+container_manager="docker"
+container_manager_additional_flags="--env-file /path/to/file --custom-flag"
+container_name_default="test-name-1"
+container_pre_init_hook="~/a_custom_default_pre_init_hook.sh"
+container_user_custom_home="$HOME/.local/share/container-home-test"
+non_interactive="1"
+skip_workdir="0"

tests/modules/programs/distrobox/example-config.nix

@@ -1,8 +1,22 @@
 {
   programs.distrobox = {
     enable = true;
-    containers = {
+    settings = {
+      container_always_pull = "1";
+      container_generate_entry = 0;
+      container_manager = "docker";
+      container_image_default = "registry.opensuse.org/opensuse/toolbox:latest";
+      container_name_default = "test-name-1";
+      container_user_custom_home = "$HOME/.local/share/container-home-test";
+      container_init_hook = "~/.local/distrobox/a_custom_default_init_hook.sh";
+      container_pre_init_hook = "~/a_custom_default_pre_init_hook.sh";
+      container_manager_additional_flags = "--env-file /path/to/file --custom-flag";
+      container_additional_volumes = "/example:/example1 /example2:/example3:ro";
+      non_interactive = "1";
+      skip_workdir = "0";
+    };
 
+    containers = {
       python-project = {
         image = "fedora:40";
         additional_packages = "python3 git";
@@ -29,13 +43,16 @@
         clone = "common-debian";
         entry = false;
       };
-
     };
   };
 
   nmt.script = ''
+    assertFileExists home-files/.config/distrobox/distrobox.conf
+    assertFileContent home-files/.config/distrobox/distrobox.conf \
+    ${./distrobox.conf}
+
     assertFileExists home-files/.config/distrobox/containers.ini
     assertFileContent home-files/.config/distrobox/containers.ini \
-      ${./example-config.ini}
+      ${./containers.ini}
   '';
 }

tests/modules/programs/distrobox/no-asserts.nix

@@ -0,0 +1,6 @@
+{
+  programs.distrobox = {
+    enable = true;
+    package = null;
+  };
+}