CI script: use jq to filter and output final format; ensure default target dir

scripts/run-ci-build.sh

@@ -1,20 +1,29 @@
 #!/bin/bash
 
+# TODO -euo pipefail isn't optimal but I haven't got the energy to improve further -Anatol
 set -euxo pipefail
 
+# ensure cargo builds in the default directory (./target)
+unset CARGO_TARGET_DIR
+
+# the old filter removed crowtty and manganese, but manganese isn't in deps anymore
+# TODO crowtty is currently being filtered because of netlify; when we migrate off of them
+# the del part can be done away with.
+# 
+# explanation of jq pipe:
+# 1. extract only contents of `workspace_default_members`
+# 2. remove entries containing the string "crowtty"
+# 3. split each element on " ", and keep the first item of the split result
+# 4. convert each element to a `{key: array_idx, value: elem_value}` dict 
+# 5. map these dicts to "-p elem_dict['value']"
+
 defaultmembers=$( \
     cargo metadata --format-version 1 | \
-    jq .workspace_default_members | \
-    grep -E '  ".*' | \
-    # crowtty's dependencies can't easily be installed on netlify
-    grep -v 'crowtty' | \
-    # manganese depends on `libudev` (transitive dep via one of its' bindeps)
-    # which can't be installed on CI.
-    grep -v 'manganese' | \
-    cut -d" " -f3 | \
-    cut -d'"' -f2 | \
-    sed -E 's/(.*)/-p \1 /g' | \
-    tr -d '\n' \
+    jq -r '.workspace_default_members 
+    | del(.[] | select(contains("crowtty")))
+    | [ .[] | split(" ")[0] ] 
+    | to_entries[]
+    |"-p \(.value)"'
 )
 
 ./just docs --document-private-items $defaultmembers