atuin: add module

This commit adds a module for configuring atuin, a replacement shell
history program.

The module adds options for generating atuin's `config.toml` from Nix,
and options to enable atuin's integration for bash and zsh
(which will rebind history keys to open the atuin history).

tests/modules/programs/atuin/bash.nix

@@ -0,0 +1,20 @@
+{ ... }:
+
+{
+  programs = {
+    atuin.enable = true;
+    bash.enable = true;
+  };
+
+  test.stubs = {
+    atuin = { };
+    bash-preexec = { };
+  };
+
+  nmt.script = ''
+    assertFileExists home-files/.bashrc
+    assertFileContains \
+      home-files/.bashrc \
+      'eval "$(@atuin@/bin/atuin init bash)"'
+  '';
+}

tests/modules/programs/atuin/default.nix

@@ -0,0 +1,7 @@
+{
+  atuin-bash = ./bash.nix;
+  atuin-empty-settings = ./empty-settings.nix;
+  atuin-example-settings = ./example-settings.nix;
+  atuin-no-shell = ./no-shell.nix;
+  atuin-zsh = ./zsh.nix;
+}

tests/modules/programs/atuin/empty-settings.nix

@@ -0,0 +1,14 @@
+{ ... }:
+
+{
+  programs.atuin.enable = true;
+
+  test.stubs = {
+    atuin = { };
+    bash-preexec = { };
+  };
+
+  nmt.script = ''
+    assertPathNotExists home-files/.config/atuin/config.toml
+  '';
+}

tests/modules/programs/atuin/example-settings-expected.toml

@@ -0,0 +1,4 @@
+db_path = "~/.atuin-history.db"
+dialect = "us"
+auto_sync = true
+search-mode = "fulltext"

tests/modules/programs/atuin/example-settings.nix

@@ -0,0 +1,32 @@
+{ ... }:
+
+{
+  programs.atuin = {
+    enable = true;
+
+    settings = {
+      db_path = "~/.atuin-history.db";
+      dialect = "us";
+      auto_sync = true;
+      search-mode = "fulltext";
+    };
+  };
+
+  test.stubs = {
+    atuin = { };
+    bash-preexec = { };
+  };
+
+  nmt.script = ''
+    assertFileContent \
+      home-files/.config/atuin/config.toml \
+      ${
+        builtins.toFile "example-settings-expected.toml" ''
+          auto_sync = true
+          db_path = "~/.atuin-history.db"
+          dialect = "us"
+          search-mode = "fulltext"
+        ''
+      }
+  '';
+}

tests/modules/programs/atuin/no-shell.nix

@@ -0,0 +1,23 @@
+{ ... }:
+
+{
+  programs = {
+    atuin = {
+      enable = true;
+      enableBashIntegration = false;
+      enableZshIntegration = false;
+    };
+    bash.enable = true;
+    zsh.enable = true;
+  };
+
+  test.stubs = {
+    atuin = { };
+    bash-preexec = { };
+  };
+
+  nmt.script = ''
+    assertFileNotRegex home-files/.zshrc '@atuin@ init zsh'
+    assertFileNotRegex home-files/.bashrc '@atuin@ init bash'
+  '';
+}

tests/modules/programs/atuin/zsh.nix

@@ -0,0 +1,20 @@
+{ ... }:
+
+{
+  programs = {
+    atuin.enable = true;
+    zsh.enable = true;
+  };
+
+  test.stubs = {
+    atuin = { };
+    bash-preexec = { };
+  };
+
+  nmt.script = ''
+    assertFileExists home-files/.zshrc
+    assertFileContains \
+      home-files/.zshrc \
+      'eval "$(@atuin@/bin/atuin init zsh)"'
+  '';
+}