Add installer module and refactor error handling

2 files changed, 7 insertions, 4 deletions

diff --git a/mling/src/pkg_mgr/mod.rs b/mling/src/pkg_mgr/mod.rs
index d03e1d8..030529e 100644
--- a/mling/src/pkg_mgr/mod.rs
+++ b/mling/src/pkg_mgr/mod.rs
@@ -4,6 +4,9 @@ use mingling::{
     macros::{dispatcher, program_setup},
 };
 
+mod installer;
+pub use installer::*;
+
 dispatcher!("install");
 dispatcher!("ls.namespace", CMDListNamespace => EntryListNamespace);
 dispatcher!("rm.namespace", CMDRemoveNamespace => EntryRemoveNamespace);
diff --git a/mling/src/proj_mgr/metadata.rs b/mling/src/proj_mgr/metadata.rs
index 84da69f..1ba24e1 100644
--- a/mling/src/proj_mgr/metadata.rs
+++ b/mling/src/proj_mgr/metadata.rs
@@ -16,10 +16,10 @@ pub fn read_metadata(cargo_toml: &PathBuf) -> Result<CargoLockFile, std::io::Err
 
     if !output.status.success() {
         let stderr = String::from_utf8_lossy(&output.stderr);
-        return Err(std::io::Error::new(
-            std::io::ErrorKind::Other,
-            format!("cargo metadata failed: {}", stderr),
-        ));
+        return Err(std::io::Error::other(format!(
+            "cargo metadata failed: {}",
+            stderr
+        )));
     }
 
     let lock_file: CargoLockFile = serde_json::from_slice(&output.stdout)