Schema as code

Every command also takes the global options, such as --json.

`nohead schema pull`

Write the project’s schema to a file (default nohead.schema.yaml; - for stdout)

nohead schema pull [options]

Option
`--output <file>`	Where to write it. Default: `nohead.schema.yaml`.

Show what push would change.

nohead schema diff [options] [file]

Argument
`[file]`	Schema file.

Option
`--exit-code`	Exit 1 when there are changes.
`--no-preview`	Skip dry runs of field migrations.

Change the project’s schema to match the file (never deletes anything)

nohead schema push [options] [file]

Argument
`[file]`	Schema file.

Option
`--yes`	Apply the changes (without it, push only shows them)
`--allow-migrations`	Allow type and multiple changes, which rewrite record values.
`--clear-invalid`	In migrations, clear values that cannot be converted.