Merge branch 'install-bob-deps' of gitlab.idiap.ch:bob/bob.devtools into install-bob-deps

bob/devtools/scripts/install_deps.py

+"""Create an environment with all external dependencies listed in bob/devtools/data/conda_build_config.yaml"""
+import click
+
+
+@click.command(
+    epilog="""Example:
+  1. Creates an environment called `myenv' containing all external bob dependencies:
+
+python bob/devtools/scripts/install_deps.py  myenv
+
+2. The version of python to solve with can be provided as option:
+
+python bob/devtools/scripts/install_deps.py  myenv --python=3.8
+
+"""
+)
+@click.argument("env_name", nargs=1)
+@click.option("--python", required=True, help="Python version to pin, e.g. 3.8")
+def install_deps(env_name, python):
+    import subprocess
+
+    from bob.devtools.build import load_packages_from_conda_build_config
+
+    conda_config_path = "bob/devtools/data/conda_build_config.yaml"
+
+    packages, package_names_map = load_packages_from_conda_build_config(
+        conda_config_path, {"channels": []}, with_pins=True
+    )
+
+    # ask mamba to create an environment with the packages
+    try:
+        _ = subprocess.run(
+            [
+                "mamba",
+                "create",
+                "--override-channels",
+                "-c",
+                "conda-forge",
+                "-n",
+                env_name,
+                f"python={python}",
+            ]
+            + packages,
+            check=True,
+        )
+    except subprocess.CalledProcessError as e:
+        print(e.output.decode())
+        raise e
+
+
+if __name__ == "__main__":
+    install_deps()