From 691cc7167fc758203e4e1bf9897b730311c0c0c2 Mon Sep 17 00:00:00 2001
From: Fabian Neumann <fabian.neumann@outlook.de>
Date: Sun, 23 Jul 2023 10:24:08 +0200
Subject: [PATCH 1/3] CI: use setup-micromamba action

---
 .github/workflows/ci.yaml | 55 ++++++++++++++-------------------------
 1 file changed, 19 insertions(+), 36 deletions(-)

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index f0cdfca18..86dfdacf8 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -19,7 +19,6 @@ on:
   - cron: "0 5 * * TUE"
 
 env:
-  CONDA_CACHE_NUMBER: 1 # Change this value to manually reset the environment cache
   DATA_CACHE_NUMBER: 2
 
 jobs:
@@ -27,22 +26,12 @@ jobs:
 
     strategy:
       fail-fast: false
+      max-parallel: 3
       matrix:
-        include:
-          # Matrix required to handle caching with Mambaforge
-        - os: ubuntu-latest
-          label: ubuntu-latest
-          prefix: /usr/share/miniconda3/envs/pypsa-eur
-
-        - os: macos-latest
-          label: macos-latest
-          prefix: /Users/runner/miniconda3/envs/pypsa-eur
-
-        - os: windows-latest
-          label: windows-latest
-          prefix: C:\Miniconda3\envs\pypsa-eur
-
-    name: ${{ matrix.label }}
+        os: 
+        - ubuntu-latest
+        - macos-latest
+        - windows-latest
 
     runs-on: ${{ matrix.os }}
 
@@ -60,24 +49,29 @@ jobs:
     - name: Add solver to environment
       run: |
         echo -e "- glpk\n- ipopt<3.13.3" >> envs/environment.yaml
-      if: ${{ matrix.label }} == 'windows-latest'
+      if: ${{ matrix.os }} == 'windows-latest'
 
     - name: Add solver to environment
       run: |
         echo -e "- glpk\n- ipopt" >> envs/environment.yaml
-      if: ${{ matrix.label }} != 'windows-latest'
+      if: ${{ matrix.os }} != 'windows-latest'
 
-    - name: Setup Mambaforge
-      uses: conda-incubator/setup-miniconda@v2
+    - name: Setup micromamba
+      uses: mamba-org/setup-micromamba@v1
       with:
-        miniforge-variant: Mambaforge
-        miniforge-version: latest
-        activate-environment: pypsa-eur
-        use-mamba: true
+        micromamba-version: latest
+        environment-file: envs/environment.yaml
+        log-level: debug
+        init-shell: bash
+        cache-environment: false
+        cache-downloads: true
+
+    - name: Print installed dependencies
+      run: |
+        micromamba list
 
     - name: Set cache dates
       run: |
-        echo "DATE=$(date +'%Y%m%d')" >> $GITHUB_ENV
         echo "WEEK=$(date +'%Y%U')" >> $GITHUB_ENV
 
     - name: Cache data and cutouts folders
@@ -88,17 +82,6 @@ jobs:
           cutouts
         key: data-cutouts-${{ env.WEEK }}-${{ env.DATA_CACHE_NUMBER }}
 
-    - name: Create environment cache
-      uses: actions/cache@v3
-      id: cache
-      with:
-        path: ${{ matrix.prefix }}
-        key: ${{ matrix.label }}-conda-${{ env.DATE }}-${{ env.CONDA_CACHE_NUMBER }}
-
-    - name: Update environment due to outdated or unavailable cache
-      run: mamba env update -n pypsa-eur -f envs/environment.yaml
-      if: steps.cache.outputs.cache-hit != 'true'
-
     - name: Test snakemake workflow
       run: |
         conda activate pypsa-eur

From 854b3b773c5e56804214e3ce7e470459ebf46e55 Mon Sep 17 00:00:00 2001
From: "pre-commit-ci[bot]"
 <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Date: Sun, 23 Jul 2023 08:25:02 +0000
Subject: [PATCH 2/3] [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci
---
 .github/workflows/ci.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 86dfdacf8..701002f98 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -28,7 +28,7 @@ jobs:
       fail-fast: false
       max-parallel: 3
       matrix:
-        os: 
+        os:
         - ubuntu-latest
         - macos-latest
         - windows-latest

From e0942d4544d411304f50cc9dc14c910e0c01ac77 Mon Sep 17 00:00:00 2001
From: Fabian Neumann <fabian.neumann@outlook.de>
Date: Sun, 23 Jul 2023 10:58:38 +0200
Subject: [PATCH 3/3] CI: enable environment cache

---
 .github/workflows/ci.yaml | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 86dfdacf8..2a14d4f2b 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -63,13 +63,9 @@ jobs:
         environment-file: envs/environment.yaml
         log-level: debug
         init-shell: bash
-        cache-environment: false
+        cache-environment: true
         cache-downloads: true
 
-    - name: Print installed dependencies
-      run: |
-        micromamba list
-
     - name: Set cache dates
       run: |
         echo "WEEK=$(date +'%Y%U')" >> $GITHUB_ENV