sys-apps/coolercontrold: fix 4.0.1, add missing patch for USE=liquidctl

Fixes: 31e055ac98
Signed-off-by: Paul Zander <negril.nx+gentoo@gmail.com>

sys-apps/coolercontrold/files/coolercontrold-4.0.1-liquidctl.patch

@@ -0,0 +1,31 @@
+Patch to make it easy to sed in the configured python interpeter and mention the liquidctl use flag in the error message.
+
+--- a/coolercontrold/daemon/src/repositories/liquidctl/liqctld_service.rs
++++ b/coolercontrold/daemon/src/repositories/liquidctl/liqctld_service.rs
+@@ -122,7 +122,7 @@ fn create_command() -> (String, &'static str) {
+         info!("Running liqctld inside an AppImage");
+         (format!("{appdir}/usr/bin/python3"), "-I")
+     } else {
+-        ("python3".to_string(), "-q")
++        ("@@PYTHON@@".to_string(), "-q")
+     }
+ }
+ 
+--- a/coolercontrold/daemon/src/repositories/liquidctl/liquidctl_repo.rs
++++ b/coolercontrold/daemon/src/repositories/liquidctl/liquidctl_repo.rs
+@@ -82,10 +82,10 @@ impl LiquidctlRepo {
+         }
+         if let Err(err) = liqctld_service::verify_env().await {
+             let msg = format!(
+-                "Python liquidctl system package not detected. If you want liquidctl device \
+-                support, please make sure the liquidctl package is installed with your \
+-                distribution's package manager. If not, you may disable liquidctl support \
+-                to no longer see this message. {err}"
++                "Python liquidctl system package not detected or liquidctl use flag is disabled \
++                for coolercontrold. If you want liquidctl device support, please make sure \
++                the liquidctl use flag is enabled for coolercontrold. If not, you may disable \
++                liquidctl support to no longer see this message. {err}"
+             );
+             return Err(InitError::PythonEnv { msg }.into());
+         }
+