Expose shell via builder

src/config.rs

@@ -15,6 +15,8 @@
 
 use std::path::PathBuf;
 
+use crate::process::Shell;
+
 /// Arguments to the watcher
 #[derive(Builder, Clone, Debug)]
 #[builder(setter(into, strip_option))]
@@ -46,6 +48,9 @@ pub struct Config {
     /// Run the commands right after starting.
     #[builder(default = "true")]
     pub run_initially: bool,
+    /// Specify the shell to use.
+    #[builder(default)]
+    pub shell: Shell,
     /// Do not wrap the commands in a shell.
     #[builder(default)]
     pub no_shell: bool,

src/lib.rs

@@ -34,6 +34,7 @@ pub mod run;
 mod signal;
 mod watcher;
 
+pub use process::Shell;
 pub use run::{run, watch, Handler};
 
 #[deprecated(since = "1.15.0", note = "Config has moved to config::Config")]

src/process.rs

@@ -19,6 +19,18 @@ pub enum Shell {
     Powershell,
 }
 
+impl Default for Shell {
+    #[cfg(windows)]
+    fn default() -> Self {
+        Self::Powershell
+    }
+
+    #[cfg(not(windows))]
+    fn default() -> Self {
+        Self::Unix("sh".into())
+    }
+}
+
 pub fn spawn(
     cmd: &[String],
     updated_paths: &[PathOp],