remove libblas mkl dependency (#799)

* remove libblas mkl dependency

* add README

* changelog fix

* remove unecessary file

.github/workflows/ci.yml

@@ -40,24 +40,14 @@ jobs:
     steps:
       - name: Checkout branch
         uses: actions/checkout@v4
-      - name: Set up conda env (windows and ubuntu)
-        if: matrix.os != 'macos-latest'
+      - name: Set up conda env
         uses: mamba-org/setup-micromamba@f8b8a1e23a26f60a44c853292711bacfd3eac822
         with:
           environment-file: environment.yml
           init-shell: ${{ matrix.os == 'windows-latest' && 'powershell' || 'bash' }}
           cache-environment: true
           create-args: >-
             python=${{ matrix.python-version }}
-      - name: Set up conda env (macos)
-        if: matrix.os == 'macos-latest'
-        uses: mamba-org/setup-micromamba@f8b8a1e23a26f60a44c853292711bacfd3eac822
-        with:
-          environment-file: environment-macos.yml
-          init-shell: bash
-          cache-environment: true
-          create-args: >-
-            python=${{ matrix.python-version }}
       - name: Install repository (unix)
         if: matrix.os != 'windows-latest'
         shell: bash -el {0}

CHANGELOG.rst

@@ -8,17 +8,21 @@ Changelog
 =========
 
 
-3.0.2 - 2024-XX-XX
-------------------
+Unreleased
+----------
 
-**Bug fix**
+**Bug fix:**
 
 - Fixed :meth:`~glum.GeneralizedLinearRegressor.wald_test` when using ``terms`` and no intercept.
 
+**Other changes:**
+
+- Removed libblas MKL from the development environment.
+
 3.0.1 - 2024-05-23
 ------------------
 
-**Bug fix**
+**Bug fix:**
 
 - We now support scikit-learn 1.5.
 

README.md

@@ -97,3 +97,9 @@ Please install the package through conda-forge:
 ```bash
 conda install glum -c conda-forge
 ```
+
+# Performance
+
+For optimal performance on an x86_64 architecture, we recommend using the MKL library
+(`conda install mkl`). By default, conda usually installs the openblas version, which
+is slower, but supported on all major architecture and OS.

environment.yml

@@ -5,7 +5,6 @@ channels:
 dependencies:
   # required for users (note: this is not where you specify new dependencies
   # for the conda packages. please put those `conda.recipe/meta.yaml`!!
-  - libblas>=0=*mkl  # comment this line out for macOS arm64
   - numexpr
   - pandas>=0.21
   - tabmat>=4.0.0