diff --git a/.idea/pkgr.iml b/.idea/pkgr.iml
index c67ef27..c93234c 100644
--- a/.idea/pkgr.iml
+++ b/.idea/pkgr.iml
@@ -1,5 +1,10 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <module type="CPP_MODULE" version="4">
+  <component name="FacetManager">
+    <facet type="Python" name="Python facet">
+      <configuration sdkName="Python 3.11" />
+    </facet>
+  </component>
   <component name="NewModuleRootManager">
     <content url="file://$MODULE_DIR$">
       <sourceFolder url="file://$MODULE_DIR$/bootpkg/src" isTestSource="false" />
@@ -13,5 +18,6 @@
     </content>
     <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" name="Python 3.11 interpreter library" level="application" />
   </component>
 </module>
\ No newline at end of file
diff --git a/bootpkg/Cargo.toml b/bootpkg/Cargo.toml
index c48277f..8292150 100644
--- a/bootpkg/Cargo.toml
+++ b/bootpkg/Cargo.toml
@@ -8,5 +8,8 @@ edition = "2021"
 [dependencies]
 manifest = { path = "../manifest" }
 pkgfile = { path = "../pkgfile" }
+toml = { version = "0.7.6", features = [ "parse" ] }
+serde = { version = "1.0.171", features = ["derive"] }
 regex = "1.9.1"
 reqwest = { version = "0.11.18", features = ["blocking"] }
+uuid = { version = "1.4.0", features = ["serde", "v4"] }
diff --git a/bootpkg/src/args.rs b/bootpkg/src/args.rs
index 2f51141..cf061e3 100644
--- a/bootpkg/src/args.rs
+++ b/bootpkg/src/args.rs
@@ -1,7 +1,7 @@
 pub enum Command {
     Strap,
     Unpack,
-    None
+    None,
 }
 
 impl From<String> for Command {
@@ -9,11 +9,10 @@ impl From<String> for Command {
         match value.to_lowercase().as_str() {
             "strap" => Command::Strap,
             "unpack" => Command::Unpack,
-            _ => Command::None
+            _ => Command::None,
         }
     }
 }
-
 pub struct Args {
     pub command: Command,
     pub args: Vec<String>,
@@ -23,7 +22,7 @@ impl From<Vec<String>> for Args {
     fn from(value: Vec<String>) -> Self {
         Args {
             command: Command::from(value[0].to_owned()),
-            args: value[1..].to_owned()
+            args: value[1..].to_owned(),
         }
     }
-}
\ No newline at end of file
+}
diff --git a/bootpkg/src/main.rs b/bootpkg/src/main.rs
index 8339041..f59cf01 100644
--- a/bootpkg/src/main.rs
+++ b/bootpkg/src/main.rs
@@ -1,10 +1,15 @@
-use std::env;
-use std::process::exit;
-use pkgfile::PKGFile;
 use crate::args::{Args, Command};
+use pkgfile::PKGFile;
+use std::env;
+use std::env::temp_dir;
+use std::fs::{create_dir, create_dir_all, File};
+use std::io::Write;
+use std::path::PathBuf;
+use std::process::exit;
+use uuid::Uuid;
 
-mod prelude;
 mod args;
+mod prelude;
 
 fn main() {
     let args = Args::from(env::args().collect::<Vec<String>>()[1..].to_owned());
@@ -33,7 +38,7 @@ fn main() {
                 }
             };
 
-            let p = match PKGFile::try_from(data) {
+            let pkg = match PKGFile::try_from(data) {
                 Ok(p) => p,
                 Err(_) => {
                     println!("!! Could not interpret PKGFile...");
@@ -41,8 +46,33 @@ fn main() {
                 }
             };
 
-        },
-        Command::Unpack => todo!(),
+            let mani = prelude::mani_from_str(&pkg.manifest);
+
+            println!("!! Package: {}", &mani.package.name);
+
+            if !mani.valid() {
+                println!("!!! Manifest is not valid.");
+                exit(1);
+            }
+
+            let mut tmp_dir = temp_dir();
+            tmp_dir.push(format!("{}", Uuid::new_v4()));
+            create_dir_all(&tmp_dir)
+                .expect("Could not create tmp dir.");
+
+            {
+                let mut file = File::create(format!("{}/pkgtar", tmp_dir.to_str().unwrap()))
+                    .expect("Could not create tmp pkgtar file");
+
+                file.write(&pkg.data)
+                    .expect("Could not write pkgtar to tmp file");
+            }
+
+            // TODO: untar
+            // TODO: cd into pkg
+            // TODO: run bootstrap commands
+        }
+        Command::Unpack => {}
         _ => {
             println!("Unsupported command, allowed commands: strap/unpack.");
             exit(1);
diff --git a/bootpkg/src/prelude.rs b/bootpkg/src/prelude.rs
index 4462619..b62eda1 100644
--- a/bootpkg/src/prelude.rs
+++ b/bootpkg/src/prelude.rs
@@ -1,22 +1,33 @@
-use std::collections::HashMap;
-use manifest::Manifest;
+use manifest::{self, Manifest};
+use serde::{Deserialize, Serialize};
+use std::{collections::HashMap, str::FromStr};
+use toml;
 
+#[derive(Serialize, Deserialize)]
 pub struct PKGR {
     pub bootstrap: Option<Bootstrap>,
 }
 
-pub struct Bootstrap {}
+#[derive(Serialize, Deserialize)]
+pub struct Bootstrap {
+    check_installed_commands: Vec<String>,
+    commands: Vec<String>
+}
 
-pub fn def_manifest() {
+#[derive(Serialize, Deserialize)]
+pub struct BadManifest {
+    pkgr: Option<PKGR>,
+}
+
+pub fn mani_from_str(s: &str) -> Manifest<Option<PKGR>> {
+    let mani = Manifest::from_str(s).unwrap();
+    let bmani = toml::from_str::<BadManifest>(s).unwrap();
     Manifest::<Option<PKGR>> {
-        package: manifest::package::Package::default(),
-        bin: None,
-        build: None,
-        dependencies: HashMap::default(),
-        fs: manifest::fs::FS {
-            config: None,
-            data: None,
-        },
-        pkgr: Some(PKGR { bootstrap: None }),
-    };
-}
\ No newline at end of file
+        package: mani.package,
+        dependencies: mani.dependencies,
+        fs: mani.fs,
+        bin: mani.bin,
+        build: mani.build,
+        pkgr: bmani.pkgr
+    }
+}
diff --git a/docs/pkgr/flow.md b/docs/pkgr/flow.md
new file mode 100644
index 0000000..d6a9a40
--- /dev/null
+++ b/docs/pkgr/flow.md
@@ -0,0 +1,3 @@
+# Install flow
+
+pkgr keeps track of installed files and therefore we have a CTREE.
diff --git a/manifest/src/bin.rs b/manifest/src/bin.rs
index 10d1ea1..e8b48a3 100644
--- a/manifest/src/bin.rs
+++ b/manifest/src/bin.rs
@@ -1,7 +1,8 @@
+use std::collections::HashMap;
 use serde::{Serialize, Deserialize};
 
 #[derive(Serialize, Deserialize)]
 pub struct Bin {
     pub root: String,
-
+    pub checksums: HashMap<String, String>
 }
\ No newline at end of file
diff --git a/manifest/src/lib.rs b/manifest/src/lib.rs
index fdc8cbc..71efe31 100644
--- a/manifest/src/lib.rs
+++ b/manifest/src/lib.rs
@@ -1,5 +1,5 @@
 use serde::{Deserialize, Serialize};
-use std::collections::HashMap;
+use std::{collections::HashMap, str::FromStr};
 
 pub mod package;
 pub mod fs;
@@ -18,6 +18,22 @@ pub struct Manifest<P = Option<pkgr::PKGR>> {
     pub pkgr: P
 }
 
+impl<T> Manifest<T> {
+    pub fn valid(&self) -> bool {
+        if self.bin.is_none() && self.build.is_none() {
+            return false
+        }
+        true
+    }
+}
+
+impl FromStr for Manifest {
+    type Err = toml::de::Error;
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        toml::from_str(s)
+    }
+}
+
 impl Default for Manifest {
     fn default() -> Self {
         Manifest {
diff --git a/mock-pkg.py b/mock-pkg.py
new file mode 100644
index 0000000..57ee008
--- /dev/null
+++ b/mock-pkg.py
@@ -0,0 +1,22 @@
+import tarfile, os
+
+with open("./package.toml", mode='r') as mani:
+    data = mani.read()
+    with open("./mock.pkg", mode='wb') as pkg:
+        print("building header...")
+        pkg.write(bytes([0x01, (len(data) >> 8) & 0xFF, len(data) & 0xFF]))
+        print("writing manifest into pkg...")
+        pkg.write(data.encode("utf-8"))
+        with tarfile.TarFile("/tmp/pkgtar", 'w') as pkgtar:
+            for root, dirs, files in os.walk("."):
+                for file in files:
+                    print(f"\33[2Kadd: {file}", end="\r", flush=True)
+                    pkgtar.add(os.path.join(root, file))
+        with open("/tmp/pkgtar", 'rb') as pkgtar:
+            print("appending pkgtar to pkg...")
+            pkg.write(pkgtar.read())
+        print("deleting /tmp/pkgtar...")
+        os.unlink("/tmp/pkgtar")
+        print("closing write stream")
+        pkg.close()
+        
\ No newline at end of file
diff --git a/package.toml b/package.toml
index fbc4070..54d55b5 100644
--- a/package.toml
+++ b/package.toml
@@ -18,10 +18,7 @@ version = 1 # this can automatically be incremented when publishing by running `
 #    previous version will lose this tag
 #  - oldest
 #    assigned to the first version.
-tags = [
-	"prod", 
-	"pkgr-spec-1"
-]
+tags = [ "prod", "pkgr-spec-1" ]
 
 ## package.type
 # Supported types:
@@ -39,7 +36,7 @@ arch = "x86_64" # this is automatically filled by `pkgr publish ...`
 # you may use the following syntax
 # "<version/tag>" or "<version/tag>,<version/tag>,..."
 [dependencies]
-example = { arch = "x86_64", tags = [ "stable" ], version = "v1" }
+#example = { arch = "x86_64", tags = [ "stable" ], version = "v1" }
 exnmbr2 = "v1,stable"
 
 ## fs
@@ -97,14 +94,12 @@ base = "latest,stable" # selected by default
 # This exists so that packager is easy to install on anything!
 # and only 1 release channel for pkgr
 [pkgr.bootstrap]
-# any non-zero = installed
-check_installed_commands = [
-	"/scripts/check_installed"
-]
+## any non-zero = installed
+check_installed_commands = [ "/scripts/check_installed" ]
 
 # any non-zero = fail
 commands = [
-	"/scripts/bootstrap/download_latest @version /tmp/pkgr.pkg",
-	"/scripts/bootstrap/dirty_install /tmp/pkgr.pkg",
-	"/scripts/bootstrap/check_install"
+    "/scripts/bootstrap/download_latest @version /tmp/pkgr.pkg",
+    "/scripts/bootstrap/dirty_install /tmp/pkgr.pkg",
+    "/scripts/bootstrap/check_install"
 ]
diff --git a/pkg/scripts/bootstrap/download_latest b/pkg/scripts/bootstrap/download_latest
new file mode 100644
index 0000000..229aaa2
--- /dev/null
+++ b/pkg/scripts/bootstrap/download_latest
@@ -0,0 +1,7 @@
+#!/bin/sh
+
+fetch_latest_version() {
+}
+
+download_file() {
+}
\ No newline at end of file
diff --git a/pkgfile/src/lib.rs b/pkgfile/src/lib.rs
index a6b1d5e..6025cd5 100644
--- a/pkgfile/src/lib.rs
+++ b/pkgfile/src/lib.rs
@@ -20,17 +20,29 @@ impl TryFrom<Vec<u8>> for PKGFile {
                 Ok(PKGFile {
                     manifest: match String::from_utf8(
                         value[
-                            3..(manifest_size as usize)
+                            3..(manifest_size as usize + 3)
                             ].to_vec()
                         )
                     {
                         Ok(s) => s,
                         _ => return Err(())
                     },
-                    data: value[(manifest_size as usize)..].to_vec(),
+                    data: value[(manifest_size as usize + 3)..].to_vec(),
                 })
             }
             _ => Err(())
         }
     }
 }
+
+impl Into<Vec<u8>> for PKGFile {
+    fn into(self) -> Vec<u8> {
+        let mut bytes = vec![0x01];
+        let manifest_bytes = self.manifest.into_bytes();
+        bytes.push((manifest_bytes.len() >> 8) as u8);
+        bytes.push((manifest_bytes.len() | 0xFF) as u8);
+        bytes.extend(manifest_bytes);
+        bytes.extend(self.data);
+        bytes
+    }
+}
\ No newline at end of file