bug#74656: [wip-zig-bootstrap] zig cache is not updated for dependencies of dependencies

[Hilton Chain]

Hi Noé,

On Tue, 03 Dec 2024 05:15:44 +0800,
Noé Lopez wrote:
>
> [1  <text/plain; utf-8 (quoted-printable)>]
> Hi,
>
> I got my hands on packaging liskvork, a gomoku server.  The build fails
> because dependencies of dependencies are not added to the zig cache, and so
> can’t be found correctly by the zig build system.
>
> I attached a patch that reproduces this, a workaround when reproducing the
> steps in a local checkout is to call “zig fetch” on the missing dependencies:
>
> $ zig fetch 
> /gnu/store/j0x1vl6w2vgr3fz60l4jgyx5gx53af61-zig-httpz-0-0.7d2ddae/src/zig-httpz-0-0.7d2ddae
>  --save=httpz
> warning: overwriting existing dependency named 'httpz'
> $ zig build --summary all
> /home/noe/.cache/zig/p/1220476906a8f57d6cbaaaeb05d44a41311a5bb6ca74bb86bc3aa1467506c241b29b/build.zig.zon:7:20:
>  error: invalid URI: UnexpectedCharacter
> $ zig fetch 
> /gnu/store/59w4s1g1y4vy4gw3mwn9fjsfcqc5454i-zig-metrics-0-0.fcf9e94/src/zig-metrics-0-0.fcf9e94
>  --save=metrics
> $ zig fetch 
> /gnu/store/izxqkxplp7alrh0n3c8j8cv277nqa04a-zig-websocket-0-0.cf89cb8/src/zig-websocket-0-0.cf89cb8
>  --save=websocket
> $ zig build --summary all
> Build Summary: 5/5 steps succeeded
> install success
> +- install liskvork success
>    +- zig build-exe liskvork Debug native-native success 3s MaxRSS:276M
>       +- options cached
>       +- options cached
>
> This has the issue of adding the packages to build.zig.zon, so a better
> solution is required.
>
> I’m attaching the patch with the liskvork package and dependencies. The error
> can be reproduced with “./pre-inst-env guix build liskvork”.
>
> Have a nice day,
> Noé

Good example, that's the current limitation of #:zig-inputs, and I'm planning to
remove it.

Please apply the attached patch onto your change.

Thanks

zig-xyz.patch
Description: Text document