bash-3.2$ opam install planets
The following actions will be performed:
 - install   planets.0.1.14
=== + 1 ===

=-=- Synchronizing package archives -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=  🐫
[planets.0.1.14] 0.1.14.tar.bz2 is in the local cache, using it.

=-=- Installing packages =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=  🐫
Copying ~/.opam/repo/testing/packages/planets/planets.0.1.14/files/planets.install to ~/.opam/system/build/planets.0.1.14/
Building planets.0.1.14:
  build.sh
  cp planets /Users/yminsky/.opam/system/bin
[ERROR] The compilation of planets.0.1.14 failed.
Removing planets.0.1.14.
  Nothing to do.


#=== ERROR while installing planets.0.1.14 ====================================#
# opam-version 1.2.0
# os           darwin
# command      cp planets /Users/yminsky/.opam/system/bin
# path         /Users/yminsky/.opam/system/build/planets.0.1.14
# compiler     system (4.02.1)
# exit-code    1
# env-file     /Users/yminsky/.opam/system/build/planets.0.1.14/planets-66843-ad8886.env
# stdout-file  /Users/yminsky/.opam/system/build/planets.0.1.14/planets-66843-ad8886.out
# stderr-file  /Users/yminsky/.opam/system/build/planets.0.1.14/planets-66843-ad8886.err
### stdout ###
# /Users/yminsky/.opam/system/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/opt/X11/bin:/usr/texbin:/Users/yminsky/.cabal/bin:/Users/yminsky/bin:/opt/local/bin:/opt/local/sbin:/Users/yminsky/.cabal/bin:/Users/yminsky/bin:/opt/local/bin:/opt/local/sbin:/usr/local/bin
# /Users/yminsky/.opam/system/lib/stublibs:/usr/local/lib/ocaml/stublibs
# /usr/local/bin/ocamlbuild
### stderr ###
# opam: unknown option `-e'
# Usage: opam config [OPTION]... [COMMAND] [ARG]...
# Try `opam config --help' or `opam --help' for more information.
# cp: planets: No such file or directory

bash-3.2$