Make data retrieval rules use their own minimal conda env

This means that the main conda environment can be changed for
development purposes without necessitating the re-running of data
retrieval due to software environment change by default.

envs/retrieve.yaml

@@ -0,0 +1,13 @@
+# SPDX-FileCopyrightText: : 2017-2024 The PyPSA-Eur Authors
+#
+# SPDX-License-Identifier: MIT
+
+name: pypsa-eur-retrieve
+channels:
+- conda-forge
+- bioconda
+dependencies:
+- python>=3.8
+- snakemake-minimal>=7.7.0,<8.0.0
+- pandas>=2.1
+- tqdm

rules/retrieve.smk

@@ -37,7 +37,7 @@ if config["enable"]["retrieve"] and config["enable"].get("retrieve_databundle",
             mem_mb=1000,
         retries: 2
         conda:
-            "../envs/environment.yaml"
+            "../envs/retrieve.yaml"
         script:
             "../scripts/retrieve_databundle.py"
 
@@ -55,7 +55,7 @@ if config["enable"].get("retrieve_irena"):
             mem_mb=1000,
         retries: 2
         conda:
-            "../envs/environment.yaml"
+            "../envs/retrieve.yaml"
         script:
             "../scripts/retrieve_irena.py"
 
@@ -157,7 +157,7 @@ if config["enable"]["retrieve"] and config["enable"].get(
             LOGS + "retrieve_sector_databundle.log",
         retries: 2
         conda:
-            "../envs/environment.yaml"
+            "../envs/retrieve.yaml"
         script:
             "../scripts/retrieve_sector_databundle.py"
 
@@ -180,7 +180,7 @@ if config["enable"]["retrieve"]:
             LOGS + "retrieve_gas_infrastructure_data.log",
         retries: 2
         conda:
-            "../envs/environment.yaml"
+            "../envs/retrieve.yaml"
         script:
             "../scripts/retrieve_gas_infrastructure_data.py"
 
@@ -376,6 +376,6 @@ if config["enable"]["retrieve"]:
             mem_mb=5000,
         retries: 2
         conda:
-            "../envs/environment.yaml"
+            "../envs/retrieve.yaml"
         script:
             "../scripts/retrieve_monthly_fuel_prices.py"