diff --git a/src/backends/cmake.rs b/src/backends/cmake.rs
index c2dfd04..1884ce2 100644
--- a/src/backends/cmake.rs
+++ b/src/backends/cmake.rs
@@ -8,7 +8,6 @@ use crate::App;
 use crate::backends::{
     BatchBackend, BatchBuildResults, BuildCommandOptions, BuildProfile, BuildResult, CommandSpec,
 };
-use crate::package::management::DependencyManager;
 
 pub struct Cmake;
 
diff --git a/src/package/lock.rs b/src/package/lock.rs
index 4e47b81..50309ac 100644
--- a/src/package/lock.rs
+++ b/src/package/lock.rs
@@ -1,5 +1,4 @@
 use crate::package::management::{copy_dir_all, LocationDescription};
-use crate::package::tree::PackageDetails;
 use serde_derive::{Deserialize, Serialize};
 use std::collections::HashMap;
 use std::path::PathBuf;
diff --git a/src/package/management.rs b/src/package/management.rs
index 0755d24..95b628c 100644
--- a/src/package/management.rs
+++ b/src/package/management.rs
@@ -1,25 +1,21 @@
 use crate::package::lock::DependencyLock;
-use crate::package::serialize_version;
 use crate::package::tree::ProjectSource::Empty;
 use crate::package::tree::{DependencyTreeNode, PackageDetails, ProjectSource};
-use crate::package::{deserialize_version, ConfigFile};
-use crate::package::{PackageDescription, LIBRARY_DIRECTORY};
+use crate::package::ConfigFile;
+use crate::package::LIBRARY_DIRECTORY;
 use crate::util::errors::LingoError;
 use colored::Colorize;
 use git2::ErrorCode::HashsumMismatch;
 use log::{debug, error};
 use serde_derive::{Deserialize, Serialize};
-use std::collections::{HashMap, VecDeque};
+use std::collections::HashMap;
 use std::fs;
 use std::fs::File;
 use std::io::Write;
-use std::ops::Deref;
 use std::path::Path;
 use std::path::PathBuf;
 use versions::{Requirement, Versioning};
 
-//TODO: we probably want a LockedDependency here with SHA-Hash and Revision
-
 #[derive(Clone, Serialize, Deserialize)]
 pub(crate) struct LocationDescription {
     #[serde(
@@ -129,7 +125,7 @@ impl DependencyManager {
         //fs::remove_dir_all(&sub_dependency_path)?;
         fs::create_dir_all(&sub_dependency_path)?;
 
-        while (!self.pulling_queue.is_empty()) {
+        while !self.pulling_queue.is_empty() {
             if let Some((package_name, package_details)) = self.pulling_queue.pop() {
                 print!("{} pulling ...", package_name.green().bold());
                 let node = match self.non_recursive_fetching(
diff --git a/src/package/mod.rs b/src/package/mod.rs
index 7c3b85b..0681059 100644
--- a/src/package/mod.rs
+++ b/src/package/mod.rs
@@ -17,7 +17,6 @@ use crate::util::errors::{BuildResult, LingoError};
 use git2::Repository;
 use serde::de::{Error, Visitor};
 use serde::{Deserializer, Serializer};
-use std::str::FromStr;
 use tempfile::tempdir;
 use versions::Versioning;
 
diff --git a/src/package/tree.rs b/src/package/tree.rs
index 99bca52..105bd23 100644
--- a/src/package/tree.rs
+++ b/src/package/tree.rs
@@ -1,18 +1,6 @@
-use crate::package::lock::DependencyLock;
-use crate::package::{ConfigFile, LIBRARY_DIRECTORY};
-use crate::util::errors::LingoError;
-use log::error;
-use run_script::run_or_exit;
-use serde::de::Unexpected::Option;
 use serde::{Deserialize, Serialize};
-use sha1dir::Checksum;
-use std::collections::HashMap;
-use std::fmt::Error;
-use std::fs;
-use std::fs::read;
 use std::hash::Hash;
 use std::path::PathBuf;
-use url::quirks::protocol;
 use url::Url;
 use versions::{Requirement, Versioning};