chore(3p/git): Unvendor git and track patches instead r/2903

This was vendored a long time ago under the expectation that keeping
it in sync with cgit would be easier this way, but it has proven not
to be a big issue.

On the other hand, a vendored copy of git is an annoying maintenance
burden. It is much easier to rebase the single (dottime) patch that we
have.

This removes the vendored copy of git and instead passes the git
source code to cgit via `pkgs.srcOnly`, which includes the applied
patch so that cgit can continue rendering dottime.

Change-Id: If31f62dea7ce688fd1b9050204e9378019775f2b

1 files changed, 0 insertions, 62 deletions

diff --git a/third_party/git/builtin/diff-index.c b/third_party/git/builtin/diff-index.c
deleted file mode 100644
index 93ec6424234c..000000000000
--- a/third_party/git/builtin/diff-index.c
+++ /dev/null
@@ -1,62 +0,0 @@
-#define USE_THE_INDEX_COMPATIBILITY_MACROS
-#include "cache.h"
-#include "config.h"
-#include "diff.h"
-#include "commit.h"
-#include "revision.h"
-#include "builtin.h"
-#include "submodule.h"
-
-static const char diff_cache_usage[] =
-"git diff-index [-m] [--cached] "
-"[<common-diff-options>] <tree-ish> [<path>...]"
-COMMON_DIFF_OPTIONS_HELP;
-
-int cmd_diff_index(int argc, const char **argv, const char *prefix)
-{
-	struct rev_info rev;
-	int cached = 0;
-	int i;
-	int result;
-
-	if (argc == 2 && !strcmp(argv[1], "-h"))
-		usage(diff_cache_usage);
-
-	git_config(git_diff_basic_config, NULL); /* no "diff" UI options */
-	repo_init_revisions(the_repository, &rev, prefix);
-	rev.abbrev = 0;
-	precompose_argv(argc, argv);
-
-	argc = setup_revisions(argc, argv, &rev, NULL);
-	for (i = 1; i < argc; i++) {
-		const char *arg = argv[i];
-
-		if (!strcmp(arg, "--cached"))
-			cached = 1;
-		else
-			usage(diff_cache_usage);
-	}
-	if (!rev.diffopt.output_format)
-		rev.diffopt.output_format = DIFF_FORMAT_RAW;
-
-	/*
-	 * Make sure there is one revision (i.e. pending object),
-	 * and there is no revision filtering parameters.
-	 */
-	if (rev.pending.nr != 1 ||
-	    rev.max_count != -1 || rev.min_age != -1 || rev.max_age != -1)
-		usage(diff_cache_usage);
-	if (!cached) {
-		setup_work_tree();
-		if (read_cache_preload(&rev.diffopt.pathspec) < 0) {
-			perror("read_cache_preload");
-			return -1;
-		}
-	} else if (read_cache() < 0) {
-		perror("read_cache");
-		return -1;
-	}
-	result = run_diff_index(&rev, cached);
-	UNLEAK(rev);
-	return diff_result_code(&rev.diffopt, result);
-}