How find path of java archive file


I install the jdbc driver : nixos.postgresql_jdbc .
I need to declare in file the classpath of the archive file.

How find the path on these files?


Try something like what I suggested here: Always symlinking the latest "jdk" to a certain path - #4 by Jerith.

That is:

environment.etc.posgresql_jdbc.source = pkgs.postgresql_jdbc;
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These java packages are mostly to use in building of other derivations, where one just include pkgs.postgresql_jdbc to buildInputs and all jars appear on classpath magically.

For downloading jars to a certain location it might be better to install coursier
and then run coursier fetch org.postgresql:postgresql:42.2.6