args: with args; stdenv.mkDerivation { name = "xlaunch"; inherit xorgserver; buildCommand = " cat << EOF > realizeuid.c #include #include #include int main(int argc, char ** argv, char ** envp) { uid_t a,b,c; int i; char *nargv[10000]; char arg1 [10]; nargv[0]=argv[0]; for (i=1; i<=argc; i++){ nargv[i+1]=argv[i]; } nargv[1]=arg1; getresuid (&a,&b,&c); snprintf(arg1,8,\"%d\",a); setresuid(c,c,c); execve(\"\$out/libexec/xlaunch\", nargv, envp); } EOF mkdir -p \$out/bin mkdir -p \$out/libexec gcc realizeuid.c -o \$out/bin/xlaunch echo '#! ${stdenv.shell} USER=\$(egrep '\\''^[-a-z0-9A-Z_]*:[^:]*:'\\''\$1'\\'':'\\'' /etc/passwd | sed -e '\\''s/:.*//'\\'' ) shift case \"\$1\" in :*) export _display=\"\$1\"; shift esac _display=\${_display:-:0} _display=\${_display#:} echo Using :\$_display if [ -n \"\$DO_X_RESET\" ]; then RESET_OPTION=\"-once\" else RESET_OPTION=\"-noreset\" fi; XCMD=\"\$(egrep \"^env\" /etc/event.d/xserver | sed -e \"s/env/ export /\" | sed -e '\\''s/#.*//'\\'' ; echo export _XARGS_=\\\$\\( grep xserver_arguments \\\$SLIM_CFGFILE \\| sed -e s/xserver_arguments// \\| sed -e s/:0/:\${_display}/ \\| sed -e s/vt7/vt\$((7+_display))/ \\) ; echo ${xorgserver}/bin/X \\\$_XARGS_ \$RESET_OPTION )\" echo \"\$XCMD\" echo \"\$XCMD\" | bash & while ! test -e /tmp/.X11-unix/X\$_display &>/dev/null ; do sleep 0.5; done su -l \${USER:-identityless-shelter} -c \"DISPLAY=:\$_display \$*\"; ' >\$out/libexec/xlaunch chmod a+x \$out/libexec/xlaunch "; }