Replace the base installer's --shell flag with a COMPOSIO_INSTALL_SHELL
environment variable, matching the COMPOSIO_INSTALL_VERSION precedent
and reading more naturally in the curl-pipe form:
curl -fsSL https://composio.dev/install | COMPOSIO_INSTALL_SHELL=zsh sh
The variable is validated before any network call. Shell variants set
it explicitly when invoking the base installer, so the route stays
authoritative over any inherited value. The composio install --shell
CLI flag and the delegation/fallback behavior are unchanged.
Teach install.sh a --shell <zsh|bash|fish> flag that performs the same
shell setup the /install/<shell> variants do: delegate to
'composio install --shell' when the installed CLI supports it, fall
back to writing the # Composio CLI PATH block inline otherwise.
The shell variants become thin wrappers that fetch the base installer
and append '--shell <name>' to the forwarded arguments, so the
delegation and fallback logic now lives in exactly one script. This
also removes the double-configuration hazard of a variant blindly
forwarding a user-supplied --shell.
Shell setup no longer depends on the composio.dev/install/<shell>
redirect rules existing: post-install guidance, docs, and release
notes now print 'curl -fsSL https://composio.dev/install | sh -s --
--shell <shell>', which works through the single existing redirect.
The variant scripts and their raw-URL preview commands keep working
for when the routes land.
Coverage: direct --shell delegation, fallback on unsupported or
failing CLI, missing and invalid values failing before any network
call, and a Docker e2e leg for the idempotent --shell bash flow.
jkomyno