===>  License MIT accepted by the user
===>   elixir-exrm-1.0.8 depends on file: /usr/local/sbin/pkg - found
===> Fetching all distfiles required by elixir-exrm-1.0.8 for building
===>  Extracting for elixir-exrm-1.0.8
=> SHA256 Checksum OK for bitwalker-exrm-1.0.8_GH0.tar.gz.
===>  Patching for elixir-exrm-1.0.8
===>   elixir-exrm-1.0.8 depends on executable: elixir - found
===>   elixir-exrm-1.0.8 depends on package: relx>=0 - found
===>  Configuring for elixir-exrm-1.0.8
===>  Building for elixir-exrm-1.0.8
Could not find Hex, which is needed to build dependency :relx
Shall I install Hex? (if running non-interactively, use "mix local.hex --force") [Yn] *** Error code 1

Stop.
make: stopped in /exrm-0cipiertest-port
1