<p>That should happen only the first time, when you make the <code>cabal repl</code> because it's building all dependencies.</p>
<p>After that, every <code>cabal repl</code> should look like Lars screen.</p>

CC BY-SA 4.0
2021-10-27T18:26:45.813Z
2021-10-27T18:26:45.813Z
georgeos
<p>Not sure how well it works yet, but the latest GHC release does improve on compilation time and memory footprint.</p>
<p><a href="https://discourse.haskell.org/t/ghc-9-2-1-released/3527" rel="nofollow noreferrer">https://discourse.haskell.org/t/ghc-9-2-1-released/3527</a></p>

CC BY-SA 4.0
2021-10-30T03:43:09.470Z
2021-10-30T03:43:09.470Z
Brian J
<p>I've already setup the IOHK binary cache in <code>/etc/nix/nix.conf</code>, yet when I build PPP lecture #2 I have to build many modules.</p>
<p><a href="https://i.sstatic.net/TTIZ2.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/TTIZ2.png" alt="enter image description here" /></a></p>
<p>whereas it seems Lars only has to process one.</p>
<p><a href="https://i.sstatic.net/ItIu2.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/ItIu2.jpg" alt="enter image description here" /></a></p>
<p>Does anyone know why this might be happening?</p>

<plutus-pioneer-program><cabal>
Cabal repl is very slow
# Cabal repl is very slow

(Asked by: username_0 on 2021-10-27)

I've already setup the IOHK binary cache in `/etc/nix/nix.conf`, yet when I build PPP lecture #2 I have to build many modules.

[![enter image description here](https://i.sstatic.net/TTIZ2.png)](https://i.sstatic.net/TTIZ2.png)

whereas it seems Lars only has to process one.

[![enter image description here](https://i.sstatic.net/ItIu2.jpg)](https://i.sstatic.net/ItIu2.jpg)

Does anyone know why this might be happening?

**Tags:** plutus-pioneer-program, cabal

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## 2 answers

### Answer by username_1 on 2021-10-27. Score: 1

That should happen only the first time, when you make the `cabal repl` because it's building all dependencies.

After that, every `cabal repl` should look like Lars screen.


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### Answer by username_2 on 2021-10-30. Score: 0

Not sure how well it works yet, but the latest GHC release does improve on compilation time and memory footprint.

<https://discourse.haskell.org/t/ghc-9-2-1-released/3527>


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