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Support Git repos in the Nix path

Browse source 
E.g.

  $ nix-build -I nixpkgs=git://github.com/NixOS/nixpkgs '<nixpkgs>' -A hello

This is not extremely useful yet because you can't specify a
branch/revision.
This commit is contained in:
Eelco Dolstra 2016-04-29 21:04:40 +02:00
parent 38539b943a
commit d8bf0d4859
5 changed files with 71 additions and 37 deletions
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13
src/libexpr/parser.y
View file

@ -520,9 +520,10 @@ formal
#include <fcntl.h>
#include <unistd.h>
#include <eval.hh>
#include <download.hh>
#include <store-api.hh>
#include "eval.hh"
#include "download.hh"
#include "store-api.hh"
#include "primops/fetchgit.hh"
namespace nix {
@ -657,7 +658,11 @@ std::pair<bool, std::string> EvalState::resolveSearchPathElem(const SearchPathEl
if (isUri(elem.second)) {
try {
res = { true, makeDownloader()->downloadCached(store, elem.second, true) };
if (hasPrefix(elem.second, "git://") || hasSuffix(elem.second, ".git"))
// FIXME: support specifying revision/branch
res = { true, exportGit(store, elem.second, "master") };
else
res = { true, makeDownloader()->downloadCached(store, elem.second, true) };
} catch (DownloadError & e) {
printMsg(lvlError, format("warning: Nix search path entry ‘%1%’ cannot be downloaded, ignoring") % elem.second);
res = { false, "" };