error: No such file or directory @ rb_sysopen - elm-stuff/exact-dependencies.json.

[polyrtm]

Whenever I try to run elm-install, I get that error. The gem installs fine.
Trace: Resolving packages... Solving dependencies... Traceback (most recent call last): 20: from /home/jackfly26/.gem/ruby/2.6.0/gems/commander-4.4.7/lib/commander/import.rb:5:in `block in <top (required)>' 19: from /home/jackfly26/.gem/ruby/2.6.0/gems/commander-4.4.7/lib/commander/delegates.rb:15:in `run!' 18: from /home/jackfly26/.gem/ruby/2.6.0/gems/commander-4.4.7/lib/commander/runner.rb:68:in `run!' 17: from /home/jackfly26/.gem/ruby/2.6.0/gems/commander-4.4.7/lib/commander/runner.rb:446:in `run_active_command' 16: from /home/jackfly26/.gem/ruby/2.6.0/gems/commander-4.4.7/lib/commander/command.rb:153:in `run' 15: from /home/jackfly26/.gem/ruby/2.6.0/gems/commander-4.4.7/lib/commander/command.rb:182:in `call' 14: from /home/jackfly26/.gem/ruby/2.6.0/gems/elm_install-1.6.1/bin/elm-install:20:in `block (2 levels) in <top (required)>' 13: from /home/jackfly26/.gem/ruby/2.6.0/gems/elm_install-1.6.1/lib/elm_install.rb:40:in `install' 12: from /home/jackfly26/.gem/ruby/2.6.0/gems/contracts-0.16.0/lib/contracts/method_handler.rb:138:in `block in redefine_method' 11: from /home/jackfly26/.gem/ruby/2.6.0/gems/contracts-0.16.0/lib/contracts/call_with.rb:79:in `call_with' 10: from /home/jackfly26/.gem/ruby/2.6.0/gems/contracts-0.16.0/lib/contracts/method_reference.rb:43:in `send_to' 9: from /home/jackfly26/.gem/ruby/2.6.0/gems/elm_install-1.6.1/lib/elm_install/installer.rb:28:in `install' 8: from /home/jackfly26/.gem/ruby/2.6.0/gems/contracts-0.16.0/lib/contracts/method_handler.rb:138:in `block in redefine_method' 7: from /home/jackfly26/.gem/ruby/2.6.0/gems/contracts-0.16.0/lib/contracts/call_with.rb:79:in `call_with' 6: from /home/jackfly26/.gem/ruby/2.6.0/gems/contracts-0.16.0/lib/contracts/method_reference.rb:43:in `send_to' 5: from /home/jackfly26/.gem/ruby/2.6.0/gems/elm_install-1.6.1/lib/elm_install/populator.rb:22:in `populate' 4: from /home/jackfly26/.gem/ruby/2.6.0/gems/contracts-0.16.0/lib/contracts/method_handler.rb:138:in `block in redefine_method' 3: from /home/jackfly26/.gem/ruby/2.6.0/gems/contracts-0.16.0/lib/contracts/call_with.rb:79:in `call_with' 2: from /home/jackfly26/.gem/ruby/2.6.0/gems/contracts-0.16.0/lib/contracts/method_reference.rb:43:in `send_to' 1: from /home/jackfly26/.gem/ruby/2.6.0/gems/elm_install-1.6.1/lib/elm_install/populator.rb:30:in `write_exact_dependencies' /home/jackfly26/.gem/ruby/2.6.0/gems/elm_install-1.6.1/lib/elm_install/populator.rb:30:in `binwrite': No such file or directory @ rb_sysopen - elm-stuff/exact-dependencies.json (Errno::ENOENT)

[SidneyNemzer]

I see the last line says:

No such file or directory @ rb_sysopen - elm-stuff/exact-dependencies.json

Maybe try running the elm compiler first to generate the exact-dependencies.json file.

(Side note: try using triple backticks instead of single backticks here -- that will preserve newlines and make it much easier to read this stacktrace!)