try to fix locale

.github/workflows/ci.yml

@@ -46,6 +46,14 @@ jobs:
           wget -qO- get.nextflow.io | bash
           sudo mv nextflow /usr/local/bin/
 
+      - name: Show current locale
+        run: locale
+
+      - name: Set UTF-8 enabled locale
+        run: |
+          sudo locale-gen en_US.UTF-8
+          sudo update-locale LANG=en_US.UTF-8
+
       - name: Run pipeline with test data
         # TODO nf-core: You can customise CI pipeline run tests as required
         # For example: adding multiple test runs with different parameters

nextflow.config

@@ -159,7 +159,7 @@ if (!params.igenomes_ignore) {
 
 env {
     PYTHONNOUSERSITE = '1'
-    PYTHONUTF8       = '1'  // MetaPhlAn3 may fail with a UnicodeDecodeError if the locale is not set appropriately.
+    // PYTHONUTF8       = '1'  // MetaPhlAn3 may fail with a UnicodeDecodeError if the locale is not set appropriately.
     R_PROFILE_USER   = "/.Rprofile"
     R_ENVIRON_USER   = "/.Renviron"
     JULIA_DEPOT_PATH = "/usr/local/share/julia"