0e95bed017
Summary: According to git-submodule manpage, "git submodule status" prefixes the hash with a '-' if it is not initialized, and other chars in other circumstances. (this is consistent on the various git versions tested) nix-prefetch-git runs "git submodule init" which does you'd think, but apparently despite this earlier versions of git before 2.16 would still give the hash the '-' suffix. In particular this is the behavior when using 2.15 and 2.14.1 from the nixos-17.09 and nixos-17.03 channels respectively. The script then used awk to drop the first char of the first field which does the wrong thing when there is no prefix emitted: while there is a space character before the hash, this is not part of the field and so we ended up eating the first character of the hash. To fix this in a way that also works with the previous behavior, this commit instead uses awk to grab the hash field and uses tr to delete any '-' chars should they be present. This seems to work in my testing, and for example can now successfully fetch the source for "nginxModules.brotli" where previously it would generate an error: fatal: '22564a95d9ab58865a096b8d9f7324ea5f2e03e' is not a commit and a branch 'fetchgit' cannot be created from it (we dropped a '2' from the beginning of the hash)
Nixpkgs is a collection of packages for the Nix package manager. It is periodically built and tested by the Hydra build daemon as so-called channels. To get channel information via git, add nixpkgs-channels as a remote:
% git remote add channels git://github.com/NixOS/nixpkgs-channels.git
For stability and maximum binary package support, it is recommended to maintain
custom changes on top of one of the channels, e.g. nixos-17.09 for the latest
release and nixos-unstable for the latest successful build of master:
% git remote update channels
% git rebase channels/nixos-17.09
For pull-requests, please rebase onto nixpkgs master.
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