Stream: beginners

Topic: Specifying platform in REPL

Krzysztof Kielak (May 13 2024 at 10:51):

Hi! I'm new to Roc and just going through the tutorial and I've been wondering if it's possible to "recreate" the context of the platform (e.g. cli) while in REPL.

I'm thinking of doing this either:

• manually, by adding some invocations that allow proper imports etc.
• or in case of the small project in it's own directory run REPL with that local context/namespace, like it's possible in case of GHC with stack repl

Thanks in advance!
Chris

Anton (May 13 2024 at 11:50):

Hi @Krzysztof Kielak,
The REPL is not my area of expertise but it looks like you could modify the lines here to e.g use the basic-cli platform instead.

Brendan Hansknecht (May 13 2024 at 12:18):

I don't think that is possible. I mean maybe you could hack the compiler to do it, but I don't think it would work (would fail to link/load).

Brendan Hansknecht (May 13 2024 at 12:18):

Repl is really just made for pure code currently

Luke Boswell (May 13 2024 at 12:48):

Interesting.. I read that as like a platform or domain specific REPL. Is that a thing elsewhere? Maybe we could have platforms that provide REPL envrionment??

Krzysztof Kielak (May 13 2024 at 14:09):

@Luke Boswell that exactly what I was actually trying to achieve to have the cli platform form say Http module available at the REPL, so I could experiment with values reported from the web without the need for the edit/compile/run cycle

Last updated: Jul 26 2025 at 12:14 UTC