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, 123 deletions

diff --git a/third_party/git/patch-ids.c b/third_party/git/patch-ids.c
deleted file mode 100644
index 12aa6d494b4e..000000000000
--- a/third_party/git/patch-ids.c
+++ /dev/null
@@ -1,123 +0,0 @@
-#include "cache.h"
-#include "diff.h"
-#include "commit.h"
-#include "sha1-lookup.h"
-#include "patch-ids.h"
-
-static int patch_id_defined(struct commit *commit)
-{
-	/* must be 0 or 1 parents */
-	return !commit->parents || !commit->parents->next;
-}
-
-int commit_patch_id(struct commit *commit, struct diff_options *options,
-		    struct object_id *oid, int diff_header_only, int stable)
-{
-	if (!patch_id_defined(commit))
-		return -1;
-
-	if (commit->parents)
-		diff_tree_oid(&commit->parents->item->object.oid,
-			      &commit->object.oid, "", options);
-	else
-		diff_root_tree_oid(&commit->object.oid, "", options);
-	diffcore_std(options);
-	return diff_flush_patch_id(options, oid, diff_header_only, stable);
-}
-
-/*
- * When we cannot load the full patch-id for both commits for whatever
- * reason, the function returns -1 (i.e. return error(...)). Despite
- * the "neq" in the name of this function, the caller only cares about
- * the return value being zero (a and b are equivalent) or non-zero (a
- * and b are different), and returning non-zero would keep both in the
- * result, even if they actually were equivalent, in order to err on
- * the side of safety.  The actual value being negative does not have
- * any significance; only that it is non-zero matters.
- */
-static int patch_id_neq(const void *cmpfn_data,
-			const struct hashmap_entry *eptr,
-			const struct hashmap_entry *entry_or_key,
-			const void *unused_keydata)
-{
-	/* NEEDSWORK: const correctness? */
-	struct diff_options *opt = (void *)cmpfn_data;
-	struct patch_id *a, *b;
-
-	a = container_of(eptr, struct patch_id, ent);
-	b = container_of(entry_or_key, struct patch_id, ent);
-
-	if (is_null_oid(&a->patch_id) &&
-	    commit_patch_id(a->commit, opt, &a->patch_id, 0, 0))
-		return error("Could not get patch ID for %s",
-			oid_to_hex(&a->commit->object.oid));
-	if (is_null_oid(&b->patch_id) &&
-	    commit_patch_id(b->commit, opt, &b->patch_id, 0, 0))
-		return error("Could not get patch ID for %s",
-			oid_to_hex(&b->commit->object.oid));
-	return !oideq(&a->patch_id, &b->patch_id);
-}
-
-int init_patch_ids(struct repository *r, struct patch_ids *ids)
-{
-	memset(ids, 0, sizeof(*ids));
-	repo_diff_setup(r, &ids->diffopts);
-	ids->diffopts.detect_rename = 0;
-	ids->diffopts.flags.recursive = 1;
-	diff_setup_done(&ids->diffopts);
-	hashmap_init(&ids->patches, patch_id_neq, &ids->diffopts, 256);
-	return 0;
-}
-
-int free_patch_ids(struct patch_ids *ids)
-{
-	hashmap_free_entries(&ids->patches, struct patch_id, ent);
-	return 0;
-}
-
-static int init_patch_id_entry(struct patch_id *patch,
-			       struct commit *commit,
-			       struct patch_ids *ids)
-{
-	struct object_id header_only_patch_id;
-
-	patch->commit = commit;
-	if (commit_patch_id(commit, &ids->diffopts, &header_only_patch_id, 1, 0))
-		return -1;
-
-	hashmap_entry_init(&patch->ent, oidhash(&header_only_patch_id));
-	return 0;
-}
-
-struct patch_id *has_commit_patch_id(struct commit *commit,
-				     struct patch_ids *ids)
-{
-	struct patch_id patch;
-
-	if (!patch_id_defined(commit))
-		return NULL;
-
-	memset(&patch, 0, sizeof(patch));
-	if (init_patch_id_entry(&patch, commit, ids))
-		return NULL;
-
-	return hashmap_get_entry(&ids->patches, &patch, ent, NULL);
-}
-
-struct patch_id *add_commit_patch_id(struct commit *commit,
-				     struct patch_ids *ids)
-{
-	struct patch_id *key;
-
-	if (!patch_id_defined(commit))
-		return NULL;
-
-	key = xcalloc(1, sizeof(*key));
-	if (init_patch_id_entry(key, commit, ids)) {
-		free(key);
-		return NULL;
-	}
-
-	hashmap_add(&ids->patches, &key->ent);
-	return key;
-}