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I would like to use ruby gem nokogiri with MetaCall (installed with install.sh) and am using the repo metacall/express-faas-rpc-example as a starting point.

I added a corresponding Gemfile, called metacall bundler install which reports the gem as being present.

When I add the `require 'nokogiri' statement to mult.rb, I get

Loading... mult.rb
Error: Ruby module evaluation failed
#<LoadError: cannot load such file -- nokogiri>
(eval):1:in `require'
(eval):1:in `<main>'
Error: Invalid ruby module loading /wrk/metacall/express-faas-rpc-example/scripts/mult.rb
Error: No module could be loaded
Error: Handle (nil) passed to metacall_handle_export is not valid
NodeJS Loader Error: MetaCall could not load from file

@viferga mentioned in the Discord chat that this is related to some environment variables and to #5.

This tries to solved an issue in a generalized version, all the description can be found here: https://github.com/metacall/distributable/issues/4#issuecomment-820432394

The idea is to provide a standard way of defining all the environment variables for the CLI instead of defining them in a dirty manner.

The following error appears when loading a Python module:

Error in sitecustomize; set PYTHONVERBOSE for traceback:
ValueError: '/gnu/store/fh3601n59i6rbsri6a4lbnnc00n6fjjl-profile/bin/../../c81i9i54fgc2gya6948dxs4b61c86f9g-python-3.10.7R/lib/python3.10/site-packages' is not in list

This is a bug from Guix which has been solved in core-updates branch but it is not merged into master yet. Update it whenever it is available. Here's the commit:

commit d8875d76555faf1a11f6838312bfe4b7f6121d2c
Author: Konrad Hinsen <[email protected]>
Date:   Thu Jan 4 13:44:19 2024 +0100

    gnu: python: Normalize sys.prefix in sitecustomize.py.
    
    * gnu/packages/aux-files/python/sitecustomize.py: normalize sys.prefix to deal
    with situations where it contains "../", as can happen in relocatable packs.
    
    Change-Id: Ibfe13d7c2a14beaa199f599e64bc0b7bfb500fe8
    Signed-off-by: Maxim Cournoyer <[email protected]>

https://github.com/metacall/distributable/tree/feature/mingw-triplet

Output:
output.txt

System information:
OS: Ubuntu 18.04 bionic
Kernel: x86_64 Linux 5.4.72-microsoft-standard-WSL2

Pastebin: https://b.darve.sh/LV0

find /gnu/store/q9rm8h9imazsq2c4qiv2yjpvlvliywqb-python-3.8.2 -regex "socket" returns no result.

In the build phase the testing of node-lts takes long, we know Guix already tests them and we just do a small change in the linking properties of the nodejs library, so I think we can safely remove the tests to speedup build times.

We should implement NetCore with nonguix (not yet bootstrapable).

Here are the TODOs:

• Add a working version of nonguix channel:
  1. https://github.com/metacall/distributable/blob/b3bf8462fb74391e4382ca14b92bb38374b1c713/channels/channels.scm#L24
  2. https://github.com/metacall/distributable/blob/b3bf8462fb74391e4382ca14b92bb38374b1c713/.guix-channel#L27
• Uncomment netcore dependencies: https://github.com/metacall/distributable/blob/b3bf8462fb74391e4382ca14b92bb38374b1c713/source/metacall.scm#L70
• Implement NetCore SDK and Runtime: https://github.com/metacall/distributable/blob/b3bf8462fb74391e4382ca14b92bb38374b1c713/source/metacall.scm#L240
  Note: We are using the SDK from nonguix by now, in the future we can implement the runtime.
• Build NetCore in depends phase: https://github.com/metacall/distributable/blob/b3bf8462fb74391e4382ca14b92bb38374b1c713/scripts/deps.sh#L26
• Make it work properly with all base dependencies for the C# Loader and export nuget in order to allow metacall nuget ... command.
• Implement tests for C#: https://github.com/metacall/distributable/tree/master/tests

We do not export the environment variables of the Guix profile while building the distributable. This is a must, because some users find common errors when mixing the distributable installation with other environments like conflicts with Python installation.

https://github.com/metacall/install/blob/90eef2a15e80aa10fa3fe0fd9473e9ba3ba1e380/install.sh#L346

This environment variables can be retrieved with:

guix package --search-paths

We should package backwardcpp (a header only library) and add an exception in Add_ExternalProject in metacall/core for when building with Guix.

We should also change this flag: -DOPTION_BUILD_PLUGINS_BACKTRACE=OFF to ON.

This script must tag properly and get all history of all commits, probably run a make download too. This script should be implemented here:
https://github.com/metacall/distributable/blob/52008d9afefdda7db2fa827bcd29d883e19fad79/tools/release.sh

Probably we can use this template to implement the tokens for GitHub:
https://github.com/metacall/distributable/blob/52008d9afefdda7db2fa827bcd29d883e19fad79/.netrc.template

This script is needed in order to implement CI/CD for MetaCall Distributable.

While attempting to embed metacall into a zig application, I encountered some confusion, and I suggest the following changes to the release tarball in order to ease the life of people trying to use it in their projects:

• Symlink gnu/include to gnu/store/szllrsimcnm8r1iiampsikhnnpk3c4zd-metacall-0.6.2/include
• Don't require CONFIGURATION_PATH
• Symlink gnu/configurations to gnu/store/y1qviprznny30lmnkgyinh0a3bsf5r40-profile/configurations
• Get c-ares and icu4c into gnu/lib somehow