Get the package building again

[certik]

There seem to be some build issues unrelated to LFortran, so in this PR we get the old LFortran version that used to work building again. Only then we will upgrade LFortran.

Checklist

• [x] Used a personal fork of the feedstock to propose changes
• [x] Bumped the build number (if the version is unchanged)
• [x] Reset the build number to 0 (if the version changed)
• [x] Re-rendered with the latest conda-smithy (Use the phrase code>@<space/conda-forge-admin, please rerender in a comment in this PR for automated rerendering)
• [x] Ensured the license file is being packaged.

[certik]

First we'll see if it builds without rerendering. Then we'll rerender and see again.

[conda-forge-admin]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe/meta.yaml) and found it was in an excellent condition.

[certik]

@conda-forge-admin, please rerender

[certik]

Ok, got it working without rerender. The issue was that emsdk by default upgraded node from 18 to 20. It's weird, we set a specific version of emsdk, but it still happened. I would like to control this explicitly, as it obviously broke the build and it will break it again in the future. But for now at least it works.

Now let's rerender and see.

[certik]

Now we are facing a really weird error on macOS intel:

/Users/runner/miniforge3/conda-bld/lfortran_1731688392502/work/src/libasr/codegen/asr_to_cpp.cpp:1:10: fatal error: 'iostream' file not found
    1 | #include <iostream>
      |          ^~~~~~~~~~
1 error generated.
make[2]: *** [src/libasr/CMakeFiles/asr.dir/build.make:76: src/libasr/CMakeFiles/asr.dir/codegen/asr_to_cpp.cpp.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:470: src/libasr/CMakeFiles/asr.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....

And a problem on macOS arm:

├─ cmake 3.21.1.*  is installable and it requires
│  └─ zlib >=1.2.11,<1.3.0a0 , which can be installed;
└─ llvmdev 18.1.8.*  is not installable because it requires
   ├─ libzlib >=1.3.1,<2.0a0  but there are no viable options
   │  ├─ libzlib 1.3.1 would require
   │  │  └─ zlib 1.3.1 *_1, which conflicts with any installable versions previously reported;
   │  ├─ libzlib 1.3.1 would require
   │  │  └─ zlib 1.3.1 *_2, which conflicts with any installable versions previously reported;
   │  └─ libzlib 1.3.1 would require
   │     └─ zlib 1.3.1 *_0, which conflicts with any installable versions previously reported;
   └─ llvm-tools [18.1.8 h9ce406d_0|18.1.8 h9ce406d_1], which requires
      └─ libzlib >=1.3.1,<2.0a0 , which cannot be installed (as previously explained).

We need lower cmake, as the newer cmake adds -g which breaks things. But we need newer LLVM as the older is not installable anymore. The two requirements are incompatible via the zlib version.

[certik]

Doing a clean fix of this in https://github.com/conda-forge/lfortran-feedstock/pull/108.

[certik]

Closing in favor of https://github.com/conda-forge/lfortran-feedstock/pull/108.