lua-lpeg @0.11 +universal Dependency error

[philippe.robert@…]

After a selfupdate to 2.1.3 and removing the port lpeg I cannot install lua-lpeg (anymore):

sudo port install lua-lpeg +universal

---> Computing dependencies for lua-lpeg

---> Staging lua-lpeg into destroot

Error: org.macports.destroot for port lua-lpeg returned: Package lua was not found in the pkg-config search path.

Perhaps you should add the directory containing `lua.pc' to the PKG_CONFIG_PATH environment variable

No package 'lua' found

Please see the log file for port lua-lpeg for details:

/opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_devel_lua-lpeg/lua-lpeg/main.log

To report a bug, follow the instructions in the guide:

​http://guide.macports.org/#project.tickets

Error: Processing of port lua-lpeg failed

As a side note, the dependencies are installed correctly:

lua @5.2.2_0+universal (active)

pkgconfig @0.28_0+universal (active)