request for feature: psql "DSN" option

Per tonight's dinner discussion, it Sure Would Be Nice if psql had an
additional option that allowed passing in a conninfo string.

The notion: Plenty of libraries out there like Pg, DBI::Pg, and such
make you specify connections in the form:
"host=my.db.host.example.org port=5678 dbname=dumb_db user=chewie"

Since those strings need to be kept around for the programs that are
directly using conninfo, it Sure Would Be Nice if those strings could
also be used as arguments to psql.

Peter Eisentraut observed that "-D" is not yet used; that's certainly
an option.

Thus, supposing we kept conninfo strings in a series of files in
/opt/scripts/conninfo, we might run a script via...

#!/bin/sh
CONNINFO=`cat /opt/scripts/conninfo/dumb_db.conninfo`
PERIOD='90 days'
QUERY="delete from my_table where trans_on < now() - '${PERIOD}'::interval;"
QUERY2="vacuum analyze my_table;"
psql -D "${CONNINFO}" -c "${QUERY}"
psql --pqconninfo="${CONNINFO}" -c "${QUERY2}"

I'm not sure those are forcibly the best names for options, but
they're a thought...
--
select 'cbbrowne' || '@' || 'gmail.com';
http://linuxdatabases.info/info/
Rules of the Evil Overlord #10. "I will not interrogate my enemies in
the inner sanctum -- a small hotel well outside my borders will work
just as well." <http://www.eviloverlord.com/>