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{ lib, stdenv, fetchgit, ruby, gnugrep, diffutils, git, darcs }:
stdenv.mkDerivation {
pname = "darcs-to-git";
version = "2015-06-04";
src = fetchgit {
url = "git://github.com/purcell/darcs-to-git.git";
rev = "e5fee32495908fe0f7d700644c7b37347b7a0a5b";
sha256 = "0lxcx0x0m1cv2j4x9ykpjf6r2zg6lh5rya016x93vkmlzxm3f0ji";
};
patchPhase = let
matchExecution = ''(\<(output_of|system|run)\([^"%]*("|%w\()|^[^"`]*`)'';
in ''
sed -r -i \
-e '1s|^#!.*|#!${ruby}/bin/ruby|' \
-e 's!${matchExecution}git\>!\1${git}/bin/git!' \
-e 's!${matchExecution}darcs\>!\1${darcs}/bin/darcs!' \
-e 's!${matchExecution}diff\>!\1${diffutils}/bin/diff!' \
-e 's!\<egrep\>!${gnugrep}/bin/egrep!g' \
-e 's!%w\(darcs init\)!%w(${darcs}/bin/darcs init)!' \
darcs-to-git
'';
installPhase = ''
install -vD darcs-to-git "$out/bin/darcs-to-git"
'';
doCheck = true;
checkPhase = ''
orig_dir="$(pwd)"
darcs_repos="$(pwd)/darcs_test_repos"
git_repos="$(pwd)/git_test_repos"
test_home="$(pwd)/test_home"
mkdir "$darcs_repos" "$git_repos" "$test_home"
cd "$darcs_repos"
${darcs}/bin/darcs init
echo "this is a test file" > new_file1
${darcs}/bin/darcs add new_file1
HOME="$test_home" ${darcs}/bin/darcs record -a -m c1 -A none
echo "testfile1" > new_file1
echo "testfile2" > new_file2
${darcs}/bin/darcs add new_file2
HOME="$test_home" ${darcs}/bin/darcs record -a -m c2 -A none
${darcs}/bin/darcs mv new_file2 only_one_file
rm -f new_file1
HOME="$test_home" ${darcs}/bin/darcs record -a -m c3 -A none
cd "$git_repos"
HOME="$test_home" PATH= "$orig_dir/darcs-to-git" "$darcs_repos"
assertFileContents() {
echo -n "File $1 contains '$2'..." >&2
if [ "x$(cat "$1")" = "x$2" ]; then
echo " passed." >&2
return 0
else
echo " failed: '$(cat "$1")' != '$2'" >&2
return 1
fi
}
echo "Checking if converted repository matches original repository:" >&2
assertFileContents only_one_file testfile2
${git}/bin/git reset --hard HEAD^
assertFileContents new_file1 testfile1
assertFileContents new_file2 testfile2
${git}/bin/git reset --hard HEAD^
assertFileContents new_file1 "this is a test file"
echo "All checks passed." >&2
cd "$orig_dir"
rm -rf "$darcs_repos" "$git_repos" "$test_home"
'';
meta = {
description = "Converts a Darcs repository into a Git repository";
homepage = "http://www.sanityinc.com/articles/converting-darcs-repositories-to-git";
license = lib.licenses.mit;
platforms = lib.platforms.unix;
};
}
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