65fb3ffb

Correct how `devShells` get their inputs

This updates the `default` dev shell for this flake as well as the one in the
template. It also exposed some other issues with the template, so those are
fixed as well.

Agent Instructions

Each run corresponds to one flake attribute. Click a run for its logs and status.

Example: https://nix-ci.com/gh:sellout:project-manager/shell-inputs-from/65fb3ffb8c2de0a93d75665e00c00bf53190b59c/8b526887-a98f-401b-9bb3-ec51158bb7ee

Wait for suite to complete:

curl --netrc -N https://nix-ci.com/gh:sellout:project-manager/shell-inputs-from/65fb3ffb8c2de0a93d75665e00c00bf53190b59c/wait

This page is also available in machine-friendly formats. Request one with the Accept header:

• curl --netrc -H 'Accept: application/json' https://nix-ci.com/gh:sellout:project-manager/shell-inputs-from/65fb3ffb8c2de0a93d75665e00c00bf53190b59c
• curl --netrc -H 'Accept: text/markdown' https://nix-ci.com/gh:sellout:project-manager/shell-inputs-from/65fb3ffb8c2de0a93d75665e00c00bf53190b59c

For more instructions, fetch https://nix-ci.com/instructions .