mambabuild fails with Problem: nothing provides requested openssl 1.1.1

Versions

$ conda list | rg '(conda-build|boa|mamba|conda )' | sort -u
boa                       0.3.5            py37h89c1867_0    conda-forge
conda                     4.9.2            py37h89c1867_0    conda-forge
conda-build               3.21.4           py37h89c1867_0    conda-forge
mamba                     0.7.14           py37h7f483ca_0    conda-forge
micromamba                0.7.14               he9b6cbd_0    conda-forge

Reproducer

git clone [e-mail]:conda-forge/srm-ifce-feedstock.git
cd srm-ifce-feedstock
git checkout 433f550a
conda mambabuild -m .ci_support/linux_64_.yaml recipe

Output

Updating build index: /home/cburr/miniconda3/conda-bld

No numpy version specified in conda_build_config.yaml.  Falling back to default numpy value of 1.16
WARNING:conda_build.metadata:No numpy version specified in conda_build_config.yaml.  Falling back to default numpy value of 1.16
Adding in variants from internal_defaults
INFO:conda_build.variants:Adding in variants from internal_defaults
Adding in variants from /home/cburr/Development/conda-forge/srm-ifce-feedstock/.ci_support/linux_64_.yaml
INFO:conda_build.variants:Adding in variants from /home/cburr/Development/conda-forge/srm-ifce-feedstock/.ci_support/linux_64_.yaml
Attempting to finalize metadata for srm-ifce
INFO:conda_build.metadata:Attempting to finalize metadata for srm-ifce
conda-forge/linux-64     Using cache
conda-forge/noarch       Using cache
pkgs/main/linux-64       [====================] (00m:00s) No change
pkgs/main/noarch         [====================] (00m:00s) No change
pkgs/r/linux-64          [====================] (00m:00s) No change
pkgs/r/noarch            [====================] (00m:00s) No change
home/cburr/miniconda3/co [====================] (00m:00s) Done
home/cburr/miniconda3/co [====================] (00m:00s) Done
Mamba failed to solve:
 - openssl
 - gsoap 2.8.106.*
 - glib
 - openssl 1.1.1
 - cgsi-gsoap
 - gct
 - glib 2.*

with channels:

The reported errors are:
⇟   Encountered problems while solving.
   Problem: nothing provides requested openssl 1.1.1

[xhochy]

I still get this with boa=0.6.2 in https://github.com/conda-forge/tensorflow-feedstock/pull/131

[chrisburr]

To be honest, conda behaves quite differently with regards to this loosen spec. I had a similar issue in mamba recently: for pinned specs and specs from files, conda does not “loosen” the spec. But apparently for conda_build_config and other specs in conda_build they do …

Delightful!

Given how central openssl is I’m inclined to advocate for the fix to be applied in mamba/boa as I fear it would cause a mess if 1.1.12 or similar was ever released.