feat: support important plugins

added a new manifest field to mark plugin as important
only install as static and important

part of #245

coffee_core/src/coffee.rs

@@ -271,6 +271,12 @@ impl PluginManager for CoffeeManager {
             if let Some(mut plugin) = repo.get_plugin_by_name(plugin) {
                 log::trace!("{:?}", plugin);
 
+                if try_dynamic && plugin.important() {
+                    return Err(error!(
+                        "plugin is important, can't be dynamically installed"
+                    ));
+                }
+
                 // old_root_path is the path where the plugin is cloned and currently stored
                 // eg. ~/.coffee/repositories/<repo_name>/<plugin_name>
                 let old_root_path = plugin.root_path.clone();
@@ -297,6 +303,12 @@ impl PluginManager for CoffeeManager {
                 );
                 let old_exec_path = plugin.exec_path.clone();
 
+                let plugin_conf_key = if plugin.important() {
+                    "important-plugin"
+                } else {
+                    "plugin"
+                };
+
                 match old_exec_path.strip_prefix(&old_root_path) {
                     Some(relative_path) => {
                         let new_exec_path = format!("{}{}", new_root_path, relative_path);
@@ -312,7 +324,7 @@ impl PluginManager for CoffeeManager {
                             self.config.plugins.push(plugin);
                             log::debug!("path coffee conf: {}", self.coffee_cln_config.path);
                             self.coffee_cln_config
-                                .add_conf("plugin", &path.to_owned())
+                                .add_conf(plugin_conf_key, &path.to_owned())
                                 .map_err(|err| error!("{}", err.cause))?;
                             log::debug!("coffee conf updated: {}", self.coffee_cln_config);
                             self.flush().await?;
@@ -348,9 +360,14 @@ impl PluginManager for CoffeeManager {
             log::debug!("runnable plugin path: {exec_path}");
             plugins.remove(index);
             log::debug!("coffee cln config: {}", self.coffee_cln_config);
+            let plugin_conf_key = if plugin.important() {
+                "important-plugin"
+            } else {
+                "plugin"
+            };
             let remove_config = self
                 .coffee_cln_config
-                .rm_conf("plugin", Some(&exec_path.to_owned()));
+                .rm_conf(plugin_conf_key, Some(&exec_path.to_owned()));
             if let Err(err) = remove_config {
                 // if this is true, we are probably a dynamic plugin:
                 if err.cause.contains("field with `plugin` not present") {

coffee_lib/src/plugin.rs

@@ -165,6 +165,18 @@ impl Plugin {
     pub fn tipping_info(&self) -> Option<Tipping> {
         self.conf.as_ref().and_then(|conf| conf.tipping.clone())
     }
+
+    pub fn important(&self) -> bool {
+        if let Some(config) = &self.conf {
+            if let Some(important) = config.plugin.important {
+                important
+            } else {
+                false
+            }
+        } else {
+            false
+        }
+    }
 }
 
 impl fmt::Display for Plugin {

coffee_lib/src/plugin_conf.rs

@@ -16,6 +16,7 @@ pub struct Plugin {
     pub dependencies: Option<Vec<String>>,
     pub install: Option<String>,
     pub main: String,
+    pub important: Option<bool>,
 }
 
 #[derive(Debug, PartialEq, Serialize, Deserialize)]

docs/docs-book/src/support-coffee.md

@@ -35,6 +35,7 @@ Where it is possible to specify the following options:
 - `lang`: the language of the plugin, used to try to install a plugin when the `install` script is not specified;
 - `install`: a custom install script used by Coffee to compile the plugin;
 - `main`: the binary or runnable file that core lightning needs to run.
+- `important`: bool flag for plugins that must be run as important-plugin
 
 In the future, the coffee will be also able to install `binary` other than a `plugin`, so coffee will be installed with coffee
 itself. With some craziness will be also possible to manage core lightning itself.