96 lines
2.8 KiB
Nix
96 lines
2.8 KiB
Nix
{
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lib,
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stdenv,
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fetchFromGitHub,
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ruby,
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gnugrep,
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diffutils,
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git,
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darcs,
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unstableGitUpdater,
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}:
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stdenv.mkDerivation {
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pname = "darcs-to-git";
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version = "0-unstable-2024-02-20";
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src = fetchFromGitHub {
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owner = "purcell";
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repo = "darcs-to-git";
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rev = "2a31a95726658fef1b48e1f0010928fc2a69d5bf";
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hash = "sha256-ep36lAYUnO3kX0ff3PxrBHog5CIGsJaERiNN5DmmAQI=";
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};
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patchPhase =
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let
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matchExecution = ''(\<(output_of|system|run)\([^"%]*("|%w\()|^[^"`]*`)'';
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in
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''
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sed -r -i \
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-e '1s|^#!.*|#!${ruby}/bin/ruby|' \
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-e 's!${matchExecution}git\>!\1${git}/bin/git!' \
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-e 's!${matchExecution}darcs\>!\1${darcs}/bin/darcs!' \
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-e 's!${matchExecution}diff\>!\1${diffutils}/bin/diff!' \
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-e 's!\<egrep\>!${gnugrep}/bin/egrep!g' \
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-e 's!%w\(darcs init\)!%w(${darcs}/bin/darcs init)!' \
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darcs-to-git
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'';
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installPhase = ''
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install -vD darcs-to-git "$out/bin/darcs-to-git"
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'';
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passthru.updateScript = unstableGitUpdater { };
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doCheck = true;
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checkPhase = ''
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orig_dir="$(pwd)"
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darcs_repos="$(pwd)/darcs_test_repos"
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git_repos="$(pwd)/git_test_repos"
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test_home="$(pwd)/test_home"
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mkdir "$darcs_repos" "$git_repos" "$test_home"
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cd "$darcs_repos"
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${darcs}/bin/darcs init
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echo "this is a test file" > new_file1
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${darcs}/bin/darcs add new_file1
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HOME="$test_home" ${darcs}/bin/darcs record -a -m c1 -A none
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echo "testfile1" > new_file1
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echo "testfile2" > new_file2
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${darcs}/bin/darcs add new_file2
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HOME="$test_home" ${darcs}/bin/darcs record -a -m c2 -A none
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${darcs}/bin/darcs mv new_file2 only_one_file
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rm -f new_file1
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HOME="$test_home" ${darcs}/bin/darcs record -a -m c3 -A none
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cd "$git_repos"
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HOME="$test_home" PATH= "$orig_dir/darcs-to-git" "$darcs_repos"
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assertFileContents() {
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echo -n "File $1 contains '$2'..." >&2
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if [ "x$(cat "$1")" = "x$2" ]; then
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echo " passed." >&2
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return 0
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else
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echo " failed: '$(cat "$1")' != '$2'" >&2
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return 1
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fi
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}
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echo "Checking if converted repository matches original repository:" >&2
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assertFileContents only_one_file testfile2
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${git}/bin/git reset --hard HEAD^
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assertFileContents new_file1 testfile1
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assertFileContents new_file2 testfile2
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${git}/bin/git reset --hard HEAD^
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assertFileContents new_file1 "this is a test file"
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echo "All checks passed." >&2
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cd "$orig_dir"
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rm -rf "$darcs_repos" "$git_repos" "$test_home"
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'';
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meta = {
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description = "Converts a Darcs repository into a Git repository";
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homepage = "http://www.sanityinc.com/articles/converting-darcs-repositories-to-git";
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license = lib.licenses.mit;
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platforms = lib.platforms.unix;
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mainProgram = "darcs-to-git";
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};
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}
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