<p>I was just able to pull down the latest Plutus code and start a nix shell so I don't think it is the branch.</p>
<p>What does your binary cache configuration look like?
<a href="https://github.com/input-output-hk/plutus#how-to-set-up-the-iohk-binary-caches" rel="nofollow noreferrer">https://github.com/input-output-hk/plutus#how-to-set-up-the-iohk-binary-caches</a></p>

CC BY-SA 4.0
2021-06-22T13:00:43.410Z
Neither the `/etc/nix/nix.conf` nor the `/.config/nix/nix.conf` exists, so I take I don't have caches set up.
matcheek
CC BY-SA 4.0
2021-06-22T14:13:18.630Z
I had to manually create these files on my machine
Frank DelPidio
CC BY-SA 4.0
2021-06-22T14:40:55.177Z
Thanks. The way I read it is this, could it be that you only managed to succeed to run nix-shell because you had binary caches specified, i.e., you downloaded the binaries without actually building plutus that is? Or did you succeed with running nix-shell without binary caches?
matcheek
CC BY-SA 4.0
2021-06-22T15:59:10.040Z
Actually, I don't need to build it if I can just use the binaries. Thanks.
matcheek
CC BY-SA 4.0
2021-06-22T10:50:52.677Z
2021-06-22T10:50:52.677Z
Frank DelPidio
<pre><code>maciej@ola:~/workdir/plutus/plutus$ nix-env --version
nix-env (Nix) 2.3.12
</code></pre>
<p>Running the <code>nix-shell</code> command for the default.nix in <a href="https://github.com/input-output-hk/plutus/blob/master/default.nix" rel="nofollow noreferrer">Plutus</a> and getting a genuine http 404 error that stops the whole nix shell from starting.</p>
<pre><code>trying https://bintray.com/joneshf/generic/download_file?file_path=purty-6.2.0-linux.tar.gz
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
curl: (22) The requested URL returned error: 404 Not Found
error: cannot download download_file?file_path=purty-6.2.0-linux.tar.gz from any mirror
builder for '/nix/store/g0drypafpyzckkpwzplp9k9amx4bf7a4-download_file?file_path=purty-6.2.0-linux.tar.gz.drv' failed with exit code 1
building '/nix/store/a7wvz8wy4iqy5ynbx49lf23a4w7dxixg-drv.r29349.tar.xz.drv'...
cannot build derivation '/nix/store/wdgbj9xf3rz44xz5afw20m1ns0n8llpg-purty-6.2.0.drv': 1 dependencies couldn't be built
</code></pre>
<p>Git log</p>
<pre><code>git log
commit e11d59a181f558fb5d2e5b0a2a32afd496660bc1 (HEAD -&gt; master, origin/master, origin/HEAD)
    Author: Jann Müller &lt;j-mueller@users.noreply.github.com&gt;
    Date:   Tue Jun 22 08:28:10 2021 +0200
</code></pre>
<p>Am I using a wrong Plutus branch? If so which branch / tag should I use to start the Plutus Playground.</p>

CC BY-SA 4.0
2022-08-31T15:06:54.957Z
I got stuck here, any ideas? I've done all steps needed, so not sure what the problem is. [![enter image description here](https://i.sstatic.net/mAGL0.png)](https://i.sstatic.net/mAGL0.png)
Diego Chagastelles
<plutus><plutus-pioneer-program>
Nix shell fails to start for Plutus
# Nix shell fails to start for Plutus

(Asked by: username_0 on 2021-06-22)

maciej@ola:~/workdir/plutus/plutus$ nix-env --version
nix-env (Nix) 2.3.12

Running the nix-shell command for the default.nix in Plutus and getting a genuine http 404 error that stops the whole nix shell from starting.
trying https://bintray.com/joneshf/generic/download_file?file_path=purty-6.2.0-linux.tar.gz
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
curl: (22) The requested URL returned error: 404 Not Found
error: cannot download download_file?file_path=purty-6.2.0-linux.tar.gz from any mirror
builder for '/nix/store/g0drypafpyzckkpwzplp9k9amx4bf7a4-download_file?file_path=purty-6.2.0-linux.tar.gz.drv' failed with exit code 1
building '/nix/store/a7wvz8wy4iqy5ynbx49lf23a4w7dxixg-drv.r29349.tar.xz.drv'...
cannot build derivation '/nix/store/wdgbj9xf3rz44xz5afw20m1ns0n8llpg-purty-6.2.0.drv': 1 dependencies couldn't be built

Git log
git log
commit e11d59a181f558fb5d2e5b0a2a32afd496660bc1 (HEAD -> master, origin/master, origin/HEAD)
    Author: Jann Müller 
    Date:   Tue Jun 22 08:28:10 2021 +0200

Am I using a wrong Plutus branch? If so which branch / tag should I use to start the Plutus Playground.

**Tags:** plutus, plutus-pioneer-program
> **Comments:**
> **username_1**: I got stuck here, any ideas? I've done all steps needed, so not sure what the problem is. [![enter image description here](https://i.sstatic.net/mAGL0.png)](https://i.sstatic.net/mAGL0.png)  

---

## 1 answers

### Answer by username_2 on 2021-06-22. Score: 1 | Accepted answer

I was just able to pull down the latest Plutus code and start a nix shell so I don't think it is the branch.

What does your binary cache configuration look like?
<https://github.com/input-output-hk/plutus#how-to-set-up-the-iohk-binary-caches>

> **Comments:**
> **username_0**: Neither the `/etc/nix/nix.conf` nor the `/.config/nix/nix.conf` exists, so I take I don't have caches set up.  
> **username_2**: I had to manually create these files on my machine  
> **username_0**: Thanks. The way I read it is this, could it be that you only managed to succeed to run nix-shell because you had binary caches specified, i.e., you downloaded the binaries without actually building plutus that is? Or did you succeed with running nix-shell without binary caches?  
> **username_0**: Actually, I don't need to build it if I can just use the binaries. Thanks.  

---

