Currently, the string "find" is substituted with the path to the find
executable in mpc.el. The correct value in this file is the literal
string "find", because it refers to an MPD command, not the program.
$ guix describe
Generation 15 May 23 2024 14:20:47 (current)
guix aeba484
repository URL:https://git.savannah.gnu.org/git/guix.git
branch: master
commit: aeba4849b42b4d3ac75341ac4b61843c1fe48181
nonguix 34935b4
repository URL:https://gitlab.com/nonguix/nonguix
branch: master
commit: 34935b49ae20d236b0fc89943f0b1d0d5dea3a33
