--
-- Read pkgpaths from a file, one per line. Blank lines and comments
-- starting with # are ignored. Inline comments are supported.
--
--
-- scriptenv(run, env) bundles a shell script body with the environment
-- variables that should be set when it runs. Intended for use inside
-- a function wrapping a script-typed config field, so the env values
-- can reference other config sections without caring about declaration
-- order. The script body is plain shell. Bob sets the env vars on
-- the child process (or prepends them as a prelude over ssh) before
-- executing.
--