[bug#56604] [PATCH 0/8] Update Clojure to 1.11.1.

[Maxime Devos]

On 01-09-2022 11:09, Ludovic Courtès wrote:

> > I guess this is expected, since a change in a build system might affect
> > all packages being built with it. But I was wondering if there is a way
> > to force only building the packages specified on the command line. Does
> > such a thing exists?
> >       
> No, it doesn’t exist, because that would be building something
> different.  In this case, building everything that depends on
> ‘ant-build-system.scm’ is unavoidable.
>
> > I was wondering what is the most efficient way to quickly iterate on
> > changes to a build system, without recompiling the whole world for that
> > build system. How would you do that?
> >       
> There’s no ideal solution as you’ll have to recompile the world anyway.
>

It is possible, actually, to test it for a single package first (although without interaction with the command line). In the package you would like to test things with, use '=>' in #:imported-modules:

((this module)
 ((that module) => (local-file "customised-that-module.scm")))

and keep the original that/module.scm unmodified.

At least, something like that is done in 'build-program' in build-aux/build-self.scm -- I haven't tried it out for something like this myself.

Greetings,
Maxime

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