Use conda list to print packages in CI jobs

This MR patches the CI pipeline to use conda list if possible to print the packages in the environment, which gives more information than pip list installed.

.gitlab-ci.yml

@@ -17,6 +17,14 @@ stages:
 
 # ------------------- Initial stage -------------------------------------------
 
+.list-env: &list-env
+  - PREFIX="$(dirname $(which python))/.."
+  - if [ -d "${PREFIX}/conda-meta" ]; then
+      conda list --prefix "${PREFIX}" --show-channel-urls;
+    else
+      python -m pip list installed;
+    fi
+
 # Check author list is up to date
 authors:
   stage: initial
@@ -40,7 +48,7 @@ containers:
   image: python
   script:
     - python -m pip install .
-    - python -m pip list installed
+    - *list-env
     - python -c "import bilby"
     - python -c "import bilby.bilby_mcmc"
     - python -c "import bilby.core"
@@ -75,7 +83,7 @@ basic-3.10:
   stage: initial
   script:
     - python -m pip install .
-    - python -m pip list installed
+    - *list-env
     - python test/test_samplers_import.py
 
 import-samplers-3.8:
@@ -138,7 +146,7 @@ install:
   stage: test
   script:
     - python -m pip install .
-    - python -m pip list installed
+    - *list-env
 
     - pytest --cov=bilby --durations 10
 
@@ -173,7 +181,7 @@ python-3.10:
   stage: test
   script:
     - python -m pip install .[all]
-    - python -m pip list installed
+    - *list-env
     - pytest test/integration/sampler_run_test.py --durations 10 -v
 
 python-3.8-samplers:
@@ -199,7 +207,7 @@ integration-tests-python-3.9:
     - schedules
   script:
     - python -m pip install .
-    - python -m pip list installed
+    - *list-env
     # Run tests which are only done on schedule
     - pytest test/integration/example_test.py
 
@@ -209,7 +217,7 @@ integration-tests-python-3.9:
     - schedules
   script:
     - python -m pip install .
-    - python -m pip list installed
+    - *list-env
     - pytest test/gw/plot_test.py