/usr/lib/haskell-packages/extra-packages/pandoc-citeproc-0.10.5.1 is in libghc-pandoc-citeproc-dev 0.10.5.1-1build4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 | libghc-pandoc-citeproc-data (>= 0.10.5.1)
|