I wrote: > I'm less clear on a reasonable way to detect a glibc platform > from SQL. The best I can think of is to see if the string > "linux" appears in the output of version(), and that's probably > none too robust. Can we do anything based on the content of > pg_collation? Probably not :-(.
Actually, scraping the buildfarm database suggests that checking version() for "linux" or even "linux-gnu" would work very well.