diff --git a/README.md b/README.md
index 1b51350..20035e8 100644
--- a/README.md
+++ b/README.md
@@ -12,14 +12,14 @@
 
 ## Basic usage
 
-| Action                                                 | Command               |
-|--------------------------------------------------------|-----------------------|
+| Action                                                 | Command      |
+|--------------------------------------------------------|--------------|
 | Build a package                                        | mlc build \<package\> |
-| Generate local repository                              | mlc repo-gen          |
-| Update local repos/PKGBUILDs                           | mlc pull/update       |
-| Create and/or open config file                         | mlc conf              |
-| Initialises repo/workspace based on config in mlc.toml | mlc init              |
-| Prunes old, duplicate packages from repository         | mlc prune \<days\>    |
+| Generate local repository                              | mlc repo-gen |
+| Update local repos/PKGBUILDs                           | mlc pull/update |
+| Create and/or open config file                         | mlc conf     |
+| Initialises repo/workspace based on config in mlc.toml | mlc init     |
+| Prunes old duplicate packages from repository          | mlc prune    |
 
 ### Pacman Repository Creation
 
diff --git a/src/internal/structs.rs b/src/internal/structs.rs
index 973dd82..0bedb11 100755
--- a/src/internal/structs.rs
+++ b/src/internal/structs.rs
@@ -18,5 +18,5 @@ pub struct UnexpandedConfig {
 #[derive(Debug)]
 pub struct SplitRepo {
     pub indx: usize,
-    pub name: String
-}
\ No newline at end of file
+    pub name: String,
+}
diff --git a/src/main.rs b/src/main.rs
index 7cad5ec..55137d4 100755
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,10 +1,10 @@
-use std::env;
 use std::path::Path;
 use std::process::Command;
+use std::{env, fs};
 
 use crate::internal::{crash, info};
-use clap::{App, AppSettings, Arg, ArgSettings, SubCommand};
 use crate::repository::create_config;
+use clap::{App, AppSettings, Arg, ArgSettings, SubCommand};
 
 use crate::workspace::read_cfg;
 
@@ -49,7 +49,7 @@ fn main() {
                         Arg::with_name("all")
                             .long("all")
                             .help("Builds all packages in mlc.toml (except if -x is specified)")
-                            .conflicts_with("package(s)")
+                            .conflicts_with("package(s)"),
                     )
                     .arg(
                         Arg::with_name("exclude")
@@ -57,21 +57,21 @@ fn main() {
                             .long("exclude")
                             .multiple(true)
                             .takes_value(true)
-                            .help("Excludes packages from given operation")
+                            .help("Excludes packages from given operation"),
                     )
+                    .arg(
+                        Arg::with_name("regen")
+                            .short("r")
+                            .long("regen")
+                            .help("Regenerates repository after building give package(s)"),
+                    ),
             )
             .subcommand(
                 SubCommand::with_name("repo-gen").about("Generates repository from built packages"),
             )
             .subcommand(
                 SubCommand::with_name("prune")
-                    .about("Prunes duplicate packages older than X days from the repository")
-                    .arg(
-                        Arg::with_name("days")
-                            .help("How old a duplicate package needs to be (in days) to be pruned")
-                            .required(true)
-                            .index(1),
-                    ),
+                    .about("Prunes duplicate packages from the repository"),
             )
             .subcommand(SubCommand::with_name("init").about(
                 "Clones all git repositories from mlc.toml branching from current directory",
@@ -95,7 +95,6 @@ fn main() {
 
     let matches = build_app().get_matches();
 
-
     if let true = matches.is_present("init") {
         let config = workspace::read_cfg();
         if config.mode == "workspace" {
@@ -156,14 +155,12 @@ fn main() {
         let mut packages: Vec<String> = matches
             .subcommand_matches("build")
             .unwrap()
-            .values_of_lossy("package(s)")
-            .unwrap_or(vec![]);
+            .values_of_lossy("package(s)").unwrap_or_default();
 
         let exclude: Vec<String> = matches
             .subcommand_matches("build")
             .unwrap()
-            .values_of_lossy("exclude")
-            .unwrap_or(vec![]);
+            .values_of_lossy("exclude").unwrap_or_default();
 
         for pkg in &exclude {
             packages.retain(|x| &*x != pkg);
@@ -180,7 +177,11 @@ fn main() {
             repos.push(a.parse().unwrap());
         }
 
-        if matches.subcommand_matches("build").unwrap().is_present("exclude") {
+        if matches
+            .subcommand_matches("build")
+            .unwrap()
+            .is_present("exclude")
+        {
             for ex in exclude {
                 repos.retain(|x| *x != ex);
             }
@@ -194,11 +195,23 @@ fn main() {
             }
         }
 
-        if matches.subcommand_matches("build").unwrap().is_present("all") {
+        if matches
+            .subcommand_matches("build")
+            .unwrap()
+            .is_present("all")
+        {
             for pkg in repos {
                 repository::build(pkg);
             }
         }
+
+        if matches
+            .subcommand_matches("build")
+            .unwrap()
+            .is_present("regen")
+        {
+            repository::generate();
+        }
     }
 
     if let true = matches.is_present("pull") {
@@ -227,9 +240,61 @@ fn main() {
         if config.mode != "repository" {
             panic!("Cannot build packages in workspace mode")
         }
+        info(format!("Generating repository: {}", config.name.unwrap()));
         repository::generate();
     }
 
+    if let true = matches.is_present("prune") {
+        let config = read_cfg();
+        if &config.mode != "repository" {
+            panic!("Cannot build packages in workspace mode")
+        }
+        let mut packages = vec![];
+        for untrimmed_repo in &config.repo {
+            pub fn trim_repo(a: String) -> String {
+                (a.split('/')
+                    .map(|s| s.to_string())
+                    .collect::<Vec<String>>()
+                    .last()
+                    .unwrap())
+                .to_string()
+            }
+            packages.push(trim_repo(untrimmed_repo.to_string()));
+        }
+
+        let mut packages_to_del = vec![];
+
+        for pkg in packages {
+            let dups = Command::new("bash")
+                .args(&["-c", &format!("ls out/{}*.tar.zst -w 1 | sort -r", pkg)])
+                .output()
+                .unwrap()
+                .stdout
+                .to_ascii_lowercase();
+
+            let duplicates = String::from_utf8_lossy(&dups);
+            let duplicates_lines = duplicates.lines().collect::<Vec<&str>>();
+            let variable_hell = duplicates_lines.iter().skip(1).collect::<Vec<&&str>>();
+
+            if !variable_hell.is_empty() {
+                for var in variable_hell {
+                    packages_to_del.push(var.to_string());
+                }
+            }
+        }
+
+        if !packages_to_del.is_empty() {
+            info(format!(
+                "Pruning duplicates: {}",
+                packages_to_del.join(", ")
+            ));
+        }
+
+        for pkg in packages_to_del {
+            fs::remove_file(pkg).unwrap();
+        }
+    }
+
     if let true = matches.is_present("config") {
         if !Path::exists("mlc.toml".as_ref()) {
             create_config();
diff --git a/src/repository/config.rs b/src/repository/config.rs
index c62fc76..dab8a1f 100644
--- a/src/repository/config.rs
+++ b/src/repository/config.rs
@@ -1,8 +1,8 @@
+use crate::crash;
 use std::env;
 use std::fs::File;
 use std::io::Write;
 use std::path::Path;
-use crate::crash;
 
 const DEFAULT_CONFIG: &str = r#"mode = ""   # either "repository" or "workspace"
 name = ""   # only required when in repository mode, decides what to call the repository and relevant files
@@ -10,11 +10,21 @@ repo = [""] # an array of git repos to clone from, formatted url_index::repo_nam
 urls = [""] # an array of urls to clone from, in the format https://example.com/%repo% (the %repo% is NOT optional)"#;
 
 pub fn create_config() {
-    if env::current_dir().unwrap().read_dir().unwrap().next().is_some() {
-        crash("Directory is not empty, please only create a repository in an empty directory".to_string(), 6);
+    if env::current_dir()
+        .unwrap()
+        .read_dir()
+        .unwrap()
+        .next()
+        .is_some()
+    {
+        crash(
+            "Directory is not empty, please only create a repository in an empty directory"
+                .to_string(),
+            6,
+        );
     }
     if !Path::exists("mlc.toml".as_ref()) {
         let mut file = File::create("mlc.toml").unwrap();
         file.write_all(DEFAULT_CONFIG.as_ref()).unwrap();
     }
-}
\ No newline at end of file
+}
diff --git a/src/repository/mod.rs b/src/repository/mod.rs
index ecb4ec3..cadf498 100755
--- a/src/repository/mod.rs
+++ b/src/repository/mod.rs
@@ -1,6 +1,6 @@
+mod config;
 mod package;
 mod repo;
-mod config;
 
 pub fn build(pkg: String) {
     package::build(pkg);
@@ -12,4 +12,4 @@ pub fn generate() {
 
 pub fn create_config() {
     config::create_config();
-}
\ No newline at end of file
+}
diff --git a/src/repository/repo.rs b/src/repository/repo.rs
index 0aab7cc..1064e0c 100644
--- a/src/repository/repo.rs
+++ b/src/repository/repo.rs
@@ -8,10 +8,12 @@ pub fn generate() {
     let config = read_cfg();
     let name = config.name.unwrap();
 
-    if !Path::exists(name.as_ref()) {
-        fs::create_dir_all(&name).unwrap();
+    if Path::exists(name.as_ref()) {
+        fs::remove_dir_all(&name).unwrap();
     }
 
+    fs::create_dir_all(&name).unwrap();
+
     Command::new("bash")
         .args(&["-c", &format!("cp -v out/* {}/", &name)])
         .spawn()
diff --git a/src/workspace/read.rs b/src/workspace/read.rs
index 165f8d0..a47b921 100755
--- a/src/workspace/read.rs
+++ b/src/workspace/read.rs
@@ -23,21 +23,19 @@ pub fn read_cfg() -> Config {
 
     let config_repos = config.repo;
     for x in config_repos {
-            let split: Vec<&str> = x.split("::").collect();
-            let sr_struct = SplitRepo {
-                indx: (&split[0]).parse().unwrap(),
-                name: (&split[1]).parse().unwrap()
-            };
-            let index = sr_struct.indx;
-            let expanded = format!("{}{}", trimmed_urls[index-1], sr_struct.name);
-            println!("{}", expanded);
-            expanded_repos.push(expanded);
+        let split: Vec<&str> = x.split("::").collect();
+        let sr_struct = SplitRepo {
+            indx: split[0].parse().unwrap(),
+            name: split[1].parse().unwrap(),
+        };
+        let index = sr_struct.indx;
+        let expanded = format!("{}{}", trimmed_urls[index - 1], sr_struct.name);
+        expanded_repos.push(expanded);
     }
 
     Config {
         mode: config.mode,
         name: config.name,
-        repo: expanded_repos
+        repo: expanded_repos,
     }
-
 }
\ No newline at end of file