refactor, add -eou pipefail

tools/rapids-configure-conda-channels

@@ -1,18 +1,20 @@
 #!/bin/bash
 # A utility script that configures conda channels
 
+set -euo pipefail
+
 conda_channel_in_config() {
   channel_id=${1:?err}
   conda config --json --get channels \
-  | jq -r --arg c "${channel_id}" '."get"."channels" | any(. == $c )'
+  | channel_id="${channel_id}" jq -r --exit-status '.get.channels | any(. == env.channel_id )'
 }
 
 # Only try to run 'conda config --remove' if the channel exists in the config.
 # This is here to avoid errors if this script is invoked multiple times in the same
 remove_conda_channel() {
   channel_id=${1:?err}
   in_config=$(conda_channel_in_config "${channel_id}")
-  if [[ "${in_config}" == "true" ]]; then
+  if conda_channel_in_config "${channel_id}" > /dev/null; then
     conda config --system --remove channels "${channel_id}"
   else
     echo "[rapids-configure-conda-channels] channel '${channel_id}' not found via 'conda config --get channels'"