lvm2: fix libdevmapper SONAME when onlyLib is on (#243578)

pkgs/os-specific/linux/lvm2/common.nix

@@ -52,7 +52,7 @@ stdenv.mkDerivation rec {
     "--with-default-run-dir=/run/lvm"
     "--with-systemdsystemunitdir=${placeholder "out"}/lib/systemd/system"
     "--with-systemd-run=/run/current-system/systemd/bin/systemd-run"
-  ] ++ lib.optionals (!enableCmdlib) [
+  ] ++ lib.optionals (!enableCmdlib && !onlyLib) [
     "--bindir=${placeholder "bin"}/bin"
     "--sbindir=${placeholder "bin"}/bin"
     "--libdir=${placeholder "lib"}/lib"
@@ -123,7 +123,7 @@ stdenv.mkDerivation rec {
   ];
 
   installPhase = lib.optionalString onlyLib ''
-    install -D -t $out/lib libdm/ioctl/libdevmapper.${if stdenv.hostPlatform.isStatic then "a" else "so"}
+    make -C libdm install_${if stdenv.hostPlatform.isStatic then "static" else "dynamic"}
     make -C libdm install_include
     make -C libdm install_pkgconfig
   '';