Track conda-forge win-arm64 packages needed to drop environment-dev-win-arm64.yml

Windows ARM64 shared-library CI currently uses dev/environment-dev-win-arm64.yml instead of dev/environment-dev.yml, because several development and test dependencies are not yet published (or not yet solvable) for win-arm64 on conda-forge.

Once the packages below are available, we should:

• use dev/environment-dev.yml on windows-11-arm as well
• delete dev/environment-dev-win-arm64.yml
• stop skipping the tests that depend on those packages

Related:

• conda-forge packaging: conda-forge/mamba-feedstock#393
• shared-library CI: mamba-org/mamba#4383

Packages that currently fail to solve on win-arm64

These are listed in environment-dev.yml (or required by tests / static CI) and cannot currently be installed from conda-forge for win-arm64:

Package	Why we need it	Notes
cxx-compiler	libmamba / micromamba build	Replaced by vs2022_win-arm64 plus ilammy/msvc-dev-cmd in CI
pkg-config	CMake dependency discovery	Migration PR: conda-forge/pkg-config-feedstock#49
make	Unix build helper in environment-dev.yml	Optional on Windows (Ninja is used)
cryptography	dependency of conda-content-trust and mitmproxy	No win-arm64 build; also blocked upstream: pyca/cryptography#14293
bcrypt	pinned extra for mitmproxy	No win-arm64 build
mitmproxy	micromamba/tests/test_proxy.py (mitmdump)	noarch, but unsolvable without cryptography / bcrypt
conda-content-trust	signed-repo tests (micromamba/test-server/reposerver.py)	noarch, but unsolvable without cryptography
mypy	libmambapy stub generation	Current builds do not solve with Python 3.14 on win-arm64
doxygen	documentation	No win-arm64 build
binutils	PE/DLL check in the Windows static build	No win-arm64 build; previous attempt: conda-forge/binutils-feedstock#89

Python on this platform is currently 3.14 (and experimental 3.15). environment-dev-win-arm64.yml pins python=3.14 for that reason.

Tests skipped until the corresponding packages exist

Test / job	Missing package	Skip mechanism
micromamba/tests/test_proxy.py	mitmproxy (mitmdump)	pytest.skip
micromamba/tests/test_login.py	pytest-xprocess	pytest.importorskip("xprocess")
micromamba/tests/test_menuinst.py	pywin32 (win32com.client)	pytest.importorskip("win32com.client")
micromamba/tests/test_package.py	zstandard	pytest.importorskip("zstandard")
micromamba/tests/test_create.py (test_create_with_empty_lines_and_comments)	memory_profiler	pytest.importorskip("memory_profiler")
Windows static build (Check micromamba PE dependencies)	binutils (objdump)	job step skipped when matrix.arch == 'arm64'

pytest-xprocess, pywin32, zstandard, and memory_profiler can already be solved on win-arm64 as of this writing, but they are still omitted from the reduced environment. They can be added incrementally; unifying on environment-dev.yml remains blocked by the compiled packages above.

Close when

• The packages in the table install on win-arm64 from conda-forge
• CI uses dev/environment-dev.yml for Windows ARM64
• dev/environment-dev-win-arm64.yml is removed
• The skips listed above are dropped (or only remain as generic missing-optional-dep guards)