Merge branch 'mxarchive' into 'master'

Add conda mxarchive environment

See merge request Pmodules/buildblocks!196

Programming/anaconda/2019.07/conda-env-defs/mxarchive/README.md

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+# INSTALLATION
+
+IMPORTANT! DON'T INSTALL WITH AURISTOR. Use an OpenAFS system (e.g. pmod6)
+
+    export TMPDIR=/opt/tmp/$USER
+    export XDG_CACHE_HOME=/opt/tmp/$USER/.cache
+    CONDA_COPY_ALWAYS=1 conda env create --file mxarchive.yml
+    conda activate mxarchive
+
+The alternate TMPDIR is required on pmod6 because /tmp is too small for pip to expand all wheel files.
+

Programming/anaconda/2019.07/conda-env-defs/mxarchive/mxarchive.yml

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+name: mxarchive
+channels:
+  - conda-forge
+  - defaults
+dependencies:
+  - python>=3.6
+  - Click>=7.0
+  - pyparsing>=2
+  - tox
+  - flake8
+  - coverage
+  - pytest>=3
+  - pytest-runner>=5
+  - Sphinx>1.8
+  - bump2version
+  - twine
+  - pip
+  - pip:
+    - git+https://git.psi.ch/bliven_s/mxarchive.git