[Nix-dev] getent LD_LIBRARY_PATH

[Lluís Batlle i Rossell]

On Mon, Dec 10, 2012 at 04:39:14PM +0100, Rickard Nilsson wrote:
> Hi,
> 
> I investigated an issue I have with getent, where LDAP entries don't show  
> up when I run 'getent passwd'. It turns out, in that case, getent reads  
> /etc/nsswitch.conf, finds "passwd: files ldap", loads libnss_files.so  
> (from glibc), prints the local users, and then tries to load  
> libnss_ldap.so from glibc. But since I use the nslcd daemon (nixos option  
> users.ldap.daemon.enable), that nss module is provided by the  
> nss-pam-ldapd package which is not in getent's LD_LIBRARY_PATH. Therefore,  
> no LDAP users are listed by getent.
> 
> However, nss-pam-ldapd is in systemPackages (added by  
> users.ldap.daemon.enable), so if I "export  
> LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/run/current-system/sw/lib" everything  
> works fine.
> 
> Why is /run/current-system/sw/lib not in LD_LIBRARY_PATH by default? In  
> NixOS' default environment,  
> LD_LIBRARY_PATH=/run/opengl-driver/lib:/run/opengl-driver-32/lib.
> 
> Or should this be solved by setting LD_LIBRARY_PATH specifically for  
> getent? But how can that be done? I wouldn't want to introduce a  
> dependency on nss-pam-ldapd in glibc...

Maybe we need a /run/nss holding those libs in nixos, and that added to
LD_LIBRARY_PATH?

A LD_LIBRARY_PATH including sw/lib can make some programs installed in the user
profiles not work (taking nixos libs instead of the libs set in the
program rpath).