Vladimír Čunát
64f9b511be
Until now, if one explicitly installed a low-priority version, nix-env --upgrade would downgrade it by default and even with --leq. Let's never accept an upgrade with version not matching the upgradeType. Additionally, let's never decrease the priority of an installed package; you can use --install to force that. Also refactor to use variable bestVersion instead of bestName, as only version was used from it.
Nix is a purely functional package manager. For installation and usage instructions, please read the manual, which can be found in `docs/manual/manual.html', and additionally at the Nix website at <http://nixos.org/>. Acknowledgments This product includes software developed by the OpenSSL Project for use in the OpenSSL Toolkit (http://www.OpenSSL.org/).