On macOS, if libcurl is built against SecureTransport, the platform repository will contain an invalid package name:
% composer show --platform | grep curl
ext-curl 8.2.7 The curl PHP extension
lib-curl 8.1.2 The curl library
lib-curl-(securetransport) openssl 3.1.1 curl (securetransport) openss...
lib-curl-libssh2 1.11.0 curl libssh2 version
lib-curl-zlib 1.2.11 curl zlib version
This change fixes it:
% bin/composer show --platform | grep curl
lib-curl 8.1.2 The curl library
lib-curl-libssh2 1.11.0 curl libssh2 version
lib-curl-securetransport 3.1.1 curl (securetransport) openssl ...
lib-curl-zlib 1.2.11 curl zlib version
(second column width difference comes from the Composer dev version number)