diff --git a/README.md b/README.md
index 5f196f3..cc10fc2 100644
--- a/README.md
+++ b/README.md
@@ -5,5 +5,12 @@
 ```bash
 #following will start your virtual shell
 start.sh
+#then in the shell open the hero shell (based on nushell, will set all paths to make this dir sandboxed)
+./hero_shell.sh
+#if you want hero and mycelium do
+herotools install_hero
+#if you want mycelium
+herotools install_mycelium
+
 ```
 
diff --git a/nushell/load.nu b/nushell/load.nu
index 42afd77..6a514ca 100644
--- a/nushell/load.nu
+++ b/nushell/load.nu
@@ -1,6 +1,6 @@
 
-use tools/varia.nu
+use tools/download.nu
 use tools/runonce.nu
-use tools/extractors.nu
 use tools/git.nu
+use tools/herotools.nu
 
diff --git a/nushell/tools/extractors.nu b/nushell/tools/download.nu
similarity index 50%
rename from nushell/tools/extractors.nu
rename to nushell/tools/download.nu
index 8268291..148c155 100644
--- a/nushell/tools/extractors.nu
+++ b/nushell/tools/download.nu
@@ -1,3 +1,4 @@
+
 # Function to extract archives with different extensions.
 export def extract [path:string] {
   let $destdir = $path | path dirname
@@ -32,4 +33,54 @@ export def extract [path:string] {
     cd $destdir
     nu -c ($handler.command + ' ' + $name)
   }
-}
\ No newline at end of file
+}
+
+
+export def "download_do" [ dest: string url: string , --minsize=1] { 
+
+    let $destdir = $dest | path dirname
+    mkdir $destdir
+    print $"download url:($url) to dest:($dest)"
+    # Download the file
+    http get $url | save -f $dest
+
+    let minsize = $minsize * 1000000
+
+    if ($minsize > 0) {
+        let p = ls $dest
+
+        if (($p.size | into int).0 < $minsize) {
+            print $"The download was too small for ($dest)"
+            exit 1
+        } else {
+            print $"Download ok for ($dest)"
+        }
+    }
+
+    # echo $"File size: $file_size bytes"
+
+}
+
+export def "download_expand" [ dest: string url: string , --minsize=1] { 
+    mkdir $dest
+    print $"download expand url:($url) to dest:($dest)"
+    let $file_name = $url | split row '/' | last
+    let $ext = $file_name | split row '.' | skip 1 | | str join "." | str downcase
+    let $dest2  = $"($dest)/downloadedfile.($ext)"
+    print $dest2
+    download_do $dest2 $url --minsize=$minsize
+    let $e = extract $dest2
+}
+
+
+# export def init_plugins [] {
+#     runonce run  init_plugins {
+# register bin/nu_plugin_dns
+# register bin/nu_plugin_desktop_notifications
+# register bin/nu_plugin_net
+# register bin/nu_plugin_port_list
+# register bin/nu_plugin_port_scan
+# register bin/nu_plugin_query
+#     } --reset  true
+# } 
+
diff --git a/nushell/tools/hero.nu b/nushell/tools/herotools.nu
similarity index 83%
rename from nushell/tools/hero.nu
rename to nushell/tools/herotools.nu
index 896befa..a8aea23 100644
--- a/nushell/tools/hero.nu
+++ b/nushell/tools/herotools.nu
@@ -1,5 +1,5 @@
 use git.nu
-use varia.nu
+use download.nu
 
 def url_crystal [] {
     let $ssha = sshagent_loaded
@@ -12,14 +12,14 @@ def url_crystal [] {
 
 export def clone_crystal [ --reset=false , --pull=false ] string {
     let $url = url_crystal
-    let $r =  git_clone crystallib $url
+    let $r =  git git_clone crystallib $url
     return $r
 }
 
-let os = $nu.os-info.name
-let arch = $nu.os-info.arch
 
 def url_mycelium [] string {
+    let $os = $nu.os-info.name
+    let $arch = $nu.os-info.arch
     if $os == "macos" {
         if $arch == "aarch64" {
             return "https://github.com/threefoldtech/mycelium/releases/download/v0.2.3/mycelium-aarch64-apple-darwin.tar.gz"
@@ -37,20 +37,22 @@ def url_mycelium [] string {
     }
 }
 
-def install_mycelium [] {
+export def install_mycelium [] {
     let $name = "mycelium"
     let tmppath = $"/tmp/($name)"
     let $bin_dir = $"($env.BASE)/bin"
     mkdir $bin_dir
     let $url =  url_mycelium
     print $url
-    download_expand $tmppath  $"($url)" --minsize 2
-    mv $"($tmppath)/($name)" $"($bin_dir)/($name)"
+    download download_expand $tmppath  $"($url)" --minsize 2
+    mv -f $"($tmppath)/($name)" $"($bin_dir)/($name)"
     chmod +x $"($bin_dir)/($name)"
 }
 
 
 def url_hero [] string {
+    let $os = $nu.os-info.name
+    let $arch = $nu.os-info.arch
     if $os == "macos" {
         if $arch == "aarch64" {
             return "https://f003.backblazeb2.com/file/threefold/macos-arm64/hero"
@@ -68,11 +70,11 @@ def url_hero [] string {
     }
 }
 
-def install_hero [] {
+export def install_hero [] {
     let $name = "hero"
     let $destpath = $"($env.BASE)/bin/hero"
     let $url =  url_hero
     print $url
-    download $destpath  $"($url)" --minsize 4
+    download download_do $destpath  $"($url)" --minsize 4
     chmod +x $destpath
 }
\ No newline at end of file
diff --git a/nushell/tools/mypaths.nu b/nushell/tools/mypaths.nu
deleted file mode 100644
index 17f834d..0000000
--- a/nushell/tools/mypaths.nu
+++ /dev/null
@@ -1,28 +0,0 @@
-
-
-export def init [] {
-    let envpath = $env.PATH 
-    | where  ($it | str contains -n '.apple.security') 
-    | where  ($it | str contains -n 'Cryptexes')
-    | where  ($it | str contains -n 'dotnet')
-    | where  ($it | str contains -n -i 'gpg')
-    | append ($env.HOME | path join .cargo/bin)
-    | append ($env.HOME | path join hero/bin)
-    | uniq
-    | sort
-    load-env  {PATH:$envpath} 
-}
-
-
-# runonce once 'lls' { ls / } --reset true
-
-# let envpath = $env.PATH 
-# | where  ($it | str contains -n '.apple.security') 
-# | where  ($it | str contains -n 'Cryptexes')
-# | where  ($it | str contains -n 'dotnet')
-# | where  ($it | str contains -n -i 'gpg')
-# | append ($env.HOME | path join .cargo/bin)
-# | append ($env.HOME | path join hero/bin)
-# | uniq
-# | sort
-# load-env  {PATH:$envpath} 
diff --git a/nushell/tools/varia.nu b/nushell/tools/varia.nu
index 2202632..742d01e 100644
--- a/nushell/tools/varia.nu
+++ b/nushell/tools/varia.nu
@@ -1,5 +1,4 @@
-use runonce.nu
-use extractors.nu
+# use runonce.nu
 
 
 export def "cargo search" [ query: string, --limit=10] {