php-install-extensions xpass doesnt work on alpine

[leenooks]

This has been triaged a bit in /remicollet/php-xpass/issues/7, but it looks like this is the summary of the issue:

• php-install-extensions xpass will automatically trigger a pull of libxcrypt (it's dependancy).
• libxcrypt is built and installed fine
• xpass is built and installed fine
• php recognises xpass installed (it shows in phpinfo())

However, calls to xpass functions (specifically tested is Yescrypt ie: password_hash($password,PASSWORD_YESCRYPT) isnt using the libxcrypt library, its still using alpine's musl crypt library.

Claude indicates php needs to be built with --with-external-libcrypt

--- Here is my interaction with claude

Also the most useful diagnostic:

php -r '
var_dump(PHP_VERSION);
var_dump(crypt("secret", "$y$j9T$saltvalue1234567890123$"));
'

If crypt() returns *0 or a DES hash, PHP still isn't using your libxcrypt. And confirm PHP's linkage again after your libxcrypt reinstall:

ldd $(php -r 'echo PHP_BINARY;') | grep crypt

It should now show libcrypt.so.1 (since you built with --enable-obsolete-api=yes). If it still shows nothing, PHP needs to be rebuilt with --with-external-libcrypt regardless of what libxcrypt is installed.

--- End interaction

And fwiw, ldd $(php -r 'echo PHP_BINARY;') | grep crypt was blank.