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Use the meta-package x86_64-microarch-level in requirements/build in conda recipes to set up the compiler flags and set up the virtual package requirements in the run requirements. When building packages on CI, level=4 will not be guaranteed, so you can only use level<=3 to build. The run_exports only has a lower bound and therefore a level=2 build can be installed on a level=3 user system. A tighter bound is not added because we want to be able to test both level=2 and level=3 on a CI machine with level=3. Therefore in order to prioritise the highest level, use the build number to prioritise the level. In [rare circumstances](https://github.com/conda-forge/microarch-level-feedstock/issues/13#issuecomment-2551385113) where a particular level needs to be forced, this can be achieved by overriding the `__archspec` [virtual package](https://docs.conda.io/projects/conda/en/stable/user-guide/tasks/manage-virtual.html) by setting the `CONDA_OVERRIDE_ARCHSPEC` environment variable during the environment solve. For example, setting `CONDA_OVERRIDE_ARCHSPEC=x86_64` will force level=1. For levels higher than 1 `CONDA_OVERRIDE_ARCHSPEC=x86_64_vx` will force level=x. For example, `CONDA_OVERRIDE_ARCHSPEC=x86_64_v2` will force level=2. Note that no checks will be done to ensure that the level is viable. Only supported on Linux and macOS.

Uploaded Tue Apr 1 02:51:39 2025
md5 checksum 76ba7590eae7c561c9ed3bde8d5d112a
build 2_piledriver
build_number 2
depends __unix
license BSD-3-Clause
license_family BSD
md5 76ba7590eae7c561c9ed3bde8d5d112a
name x86_64-microarch-level
noarch generic
sha1 c76a2600b29d968d0d46a8c1253790fd08941f5d
sha256 ebdab616371fe9346aff387740e99298ec59036ba329dbf880a870f84e661879
size 8116
subdir noarch
timestamp 1737665576016
version 2