restore reuse compatibility in environment.fixed.yaml

doc/conf.py

@@ -82,7 +82,7 @@ author = "Tom Brown (KIT, TUB, FIAS), Jonas Hoersch (KIT, FIAS), Fabian Hofmann
 # The short X.Y version.
 version = "0.8"
 # The full version, including alpha/beta/rc tags.
-release = "0.8.0"
+release = "0.8.1"
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.

envs/environment.fixed.yaml

@@ -1,3 +1,7 @@
+# SPDX-FileCopyrightText: : 2017-2023 The PyPSA-Eur Authors
+#
+# SPDX-License-Identifier: CC0-1.0
+
 name: pypsa-eur
 channels:
 - bioconda