Via my work on the media-types package,

I wanted to know which packages were using the media type application/x-xcf, which apparently is not correct (#991158). The https://codesearch.debian.net site gives the answer. (Thanks!)

Moreover, one can create a user key, for command-line remote access; here is an example below (the file dcs-apikeyHeader-plessy.txt contains x-dcs-apikey: followed by my access key).

curl -X GET "https://codesearch.debian.net/api/v1/searchperpackage?query=application/x-xcf&match_mode=literal" -H @dcs-apikeyHeader-plessy.txt > result.json

The result is serialised in JSON. Here is how I transformed it to make a list of email addresses that I could easily paste in mutt.

cat result.json |
  jq --raw-output '.[]."package"' |
  dd-list --stdin |
  sed -e '/^ /d' -e '/^$/'d -e 's/$/,/' -e 's/^/  /'