[bug#53775] [PATCH] gnu: Add gnunet-scheme

[Maxime Devos]

X-Debbugs-CC: pukkamustard <pukkamustard@posteo.net>, pukkamustard 
<pukkamustard@posteo.net>

[CC'ing pukkamustard and ludo for their interest in Guix+GNUnet]

Hi,

The first patch adds a module to guile-fibers required by gnunet-scheme.  It 
has been submitted upstream at <https://github.com/wingo/fibers/pull/50>, but 
there has not been any response so far.

The second commit adds 'gnunet-scheme', which is not the same as guile-gnunet:

"This package provides Guile modules for connecting to the NSE (network
size estimation) and DHT (distributed hash table) services of GNUnet.  It also
has infrastructure for writing new GNUnet services and connecting to them and
can be used from multi-threaded environments.  It is not to be confused with
@code{guile-gnunet} -- @code{guile-gnunet} supports a different set of 
services."

gnunet-scheme supports the DHT and NSE, while guile-gnunet doesn't.
Conversely, guile-gnunet supports FS while gnunet-scheme doesn't (yet).
Additionally, while it's not impossible per se, guile-gnunet is hard
to use from a multi-threaded context.

Next step: integrate it with guile-eris and the substituter patches based
on guile-eris (currently these only support IPFS as P2P backend)!

'guix lint gnunet-scheme guile-fibers' only have a single complaint:

gnu/packages/gnunet.scm:379:12: gnunet-scheme@0.2: URI 
https://git.gnunet.org/git/gnunet-scheme.git not reachable: 404 ("Not Found")

"guix build gnunet-scheme" could download the source code though,
so I don't understand.

It fails to cross-compile because guile-fibers fails to cross-compile:

> checking for guile-3.0... yes
> checking for guile-3.0... no
> checking for guile3.0... no
> checking for guile-3... no
> checking for guile3... no
> checking for guile... no
> configure: error: guile required but not found

That's unrelated to gnunet-scheme though.

Greetings,
Maxime

0001-gnu-guile-fibers-Add-fibers-io-wakeup.patch
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0002-gnu-Add-gnunet-scheme.patch
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