config: ArchPackageManager should be snake_case (#784)

* config: ArchPackageManager should be snake_case

* Remove unnecessary strum macro

* Add arch_package_manager to config.example.toml

config.example.toml

@@ -63,6 +63,8 @@
 #greedy_cask = true
 
 [linux]
+# Arch Package Manager to use. Allowed values: autodetect, trizen, paru, yay, pacman.
+#arch_package_manager = "pacman"
 # Arguments to pass yay (or paru) when updating packages
 #yay_arguments = "--nodevel"
 #trizen_arguments = "--devel"

src/config.rs

@@ -181,6 +181,7 @@ pub struct Brew {
 }
 
 #[derive(Debug, Deserialize, Clone, Copy)]
+#[serde(rename_all = "snake_case")]
 pub enum ArchPackageManager {
     Autodetect,
     Trizen,