* Package:    dev-ml/ppx_tools-6.3
 * Repository: gentoo
 * Maintainer: gienah@gentoo.org
 * USE:        abi_x86_64 amd64 elibc_glibc kernel_linux ocamlopt userland_GNU
 * FEATURES:   network-sandbox preserve-libs sandbox splitdebug userpriv usersandbox

>>> Unpacking source...
>>> Unpacking ppx_tools-6.3.tar.gz to /var/tmp/portage/dev-ml/ppx_tools-6.3/work
>>> Source unpacked in /var/tmp/portage/dev-ml/ppx_tools-6.3/work
>>> Preparing source in /var/tmp/portage/dev-ml/ppx_tools-6.3/work/ppx_tools-6.3 ...
>>> Source prepared.
>>> Configuring source in /var/tmp/portage/dev-ml/ppx_tools-6.3/work/ppx_tools-6.3 ...
>>> Source configured.
>>> Compiling source in /var/tmp/portage/dev-ml/ppx_tools-6.3/work/ppx_tools-6.3 ...
File "src/dune", line 6, characters 28-37:
6 |  (preprocess (action (run %{bin:cppo} -V OCAML:%{ocaml_version} %{input-file})))
                                ^^^^^^^^^
Error: Program cppo not found in the tree or in PATH
 (context: default)
File "src/dune", line 23, characters 28-37:
23 |  (preprocess (action (run %{bin:cppo} -V OCAML:%{ocaml_version} %{input-file})))
                                 ^^^^^^^^^
Error: Program cppo not found in the tree or in PATH
 (context: default)
 * ERROR: dev-ml/ppx_tools-6.3::gentoo failed (compile phase):
 *   (no error message)
 * 
 * Call stack:
 *     ebuild.sh, line 127:  Called src_compile
 *   environment, line 506:  Called dune_src_compile
 *   environment, line 327:  Called die
 * The specific snippet of code:
 *       dune build @install || die
 * 
 * If you need support, post the output of `emerge --info '=dev-ml/ppx_tools-6.3::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=dev-ml/ppx_tools-6.3::gentoo'`.
 * The complete build log is located at '/var/log/portage/dev-ml:ppx_tools-6.3:20210610-012425.log'.
 * For convenience, a symlink to the build log is located at '/var/tmp/portage/dev-ml/ppx_tools-6.3/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/dev-ml/ppx_tools-6.3/temp/environment'.
 * Working directory: '/var/tmp/portage/dev-ml/ppx_tools-6.3/work/ppx_tools-6.3'
 * S: '/var/tmp/portage/dev-ml/ppx_tools-6.3/work/ppx_tools-6.3'