Conda gcc broken

[fbaig]

Describe the bug
The gcc compiler is broken

To Reproduce
Steps to reproduce the behavior:

1. Run docker run -it --platform linux/amd64 pangeo/pangeo-notebook:2025.01.10 /bin/bash
2. [In container] Create a sample c code file vim test.c

#include <stdio.h>
#define LAST 10      
int main()
{
     int i, sum = 0;
     for ( i = 1; i <= LAST; i++ ) {
        sum += i;
      } /*-for-*/
      printf("sum = %d\n", sum);
      return 0;
}

3. Compile the test code gcc test.c
4. Produces following error

/srv/conda/envs/notebook/bin/../lib/gcc/x86_64-conda-linux-gnu/13.3.0/../../../../x86_64-conda-linux-gnu/bin/ld: cannot find -lgcc: No such file or directory
/srv/conda/envs/notebook/bin/../lib/gcc/x86_64-conda-linux-gnu/13.3.0/../../../../x86_64-conda-linux-gnu/bin/ld: cannot find -lgcc: No such file or directory

Expected behavior
The sample code should compile without any error.

Docker Image Version:
pangeo/pangeo-notebook:2025.01.10

Infrastructure (Where you are running this image):
Personal MacBook Pro Apple M2 Pro, 32 GB, MacOS 15.3.2

[weiji14]

Hmm, so version 2025.01.10 had a mix of gcc=13.3.0 and libgcc=14.2.0:

$ mamba list | grep gcc
_libgcc_mutex             0.1                 conda_forge    conda-forge
gcc                       13.3.0               h9576a4e_1    conda-forge
gcc_impl_linux-64         13.3.0               hfea6d02_1    conda-forge
gcc_linux-64              13.3.0               hc28eda2_7    conda-forge
libgcc                    14.2.0               h77fa898_1    conda-forge
libgcc-devel_linux-64     13.3.0             h84ea5a7_101    conda-forge
libgcc-ng                 14.2.0               h69a702a_1    conda-forge

The dependency gcc is required by c-compiler, which is required by parcels (see https://github.com/pangeo-data/pangeo-docker-images/blob/2025.01.10/pangeo-notebook/conda-lock.yml#L30476-L30482). But parcels should have been dropped in that 2025.01.10 tag (see #596 (comment)) along with gcc, so I'm not sure why gcc was in the docker image 😅

Indeed, if I look at tag 2024.01.24, there is only libgcc=14.2.0:

$ docker run -it --platform linux/amd64 pangeo/pangeo-notebook:2025.01.24 /bin/bash
$ which gcc  # returns nothing
$ mamba list | grep gcc
_libgcc_mutex             0.1                 conda_forge    conda-forge
libgcc                    14.2.0               h77fa898_1    conda-forge
libgcc-ng                 14.2.0               h69a702a_1    conda-forge

I guess the question now is, do we want to add gcc (or c-compiler) explicitly to pangeo-notebook?