instead of having to deal with these in gotwebd, deal with the lonely
pack error at a lowel level, i.e. in got_repo_search_packidx and match
routines.

This also makes the repo_purge_redundant_packfile skip over these lonely
packs, but maybe the -p could be an implicit default behaviour of
cleanup.  But not in this diff :)

thoughts?

diff /home/op/w/got
commit - 62baee9a86a9325d23bf2f048d28f38b978f707d
path + /home/op/w/got
blob - ea44d67c0df8c731d5a45b797add4cbee60f171c
file + gotwebd/gotweb.c
--- gotwebd/gotweb.c
+++ gotwebd/gotweb.c
@@ -197,7 +197,7 @@ gotweb_process_request(struct request *c)
 	if (qs->action != INDEX) {
 		error = gotweb_load_got_path(&repo_dir, qs->path, c);
 		c->t->repo_dir = repo_dir;
-		if (error && error->code != GOT_ERR_LONELY_PACKIDX)
+		if (error)
 			goto err;
 	}
 
@@ -825,7 +825,7 @@ gotweb_render_index(struct template *tp)
 
 		error = gotweb_load_got_path(&repo_dir, sd_dent[d_i]->d_name,
 		    c);
-		if (error && error->code != GOT_ERR_LONELY_PACKIDX) {
+		if (error) {
 			if (error->code != GOT_ERR_NOT_GIT_REPO)
 				log_warnx("%s: %s: %s", __func__,
 				    sd_dent[d_i]->d_name, error->msg);
blob - f6c9b881e64ee0270d643a9dc809378060318b2b
file + lib/repository.c
--- lib/repository.c
+++ lib/repository.c
@@ -1404,8 +1404,11 @@ got_repo_search_packidx(struct got_packidx **packidx, 
 
 		err = got_packidx_open(packidx, got_repo_get_fd(repo),
 		    path_packidx, 0, repo->algo);
-		if (err)
+		if (err) {
+			if (err->code == GOT_ERR_LONELY_PACKIDX)
+				continue;
 			goto done;
+		}
 
 		err = add_packidx_bloom_filter(repo, *packidx, path_packidx);
 		if (err)
@@ -1849,8 +1852,13 @@ retry:
 
 		err = got_packidx_open(&packidx, got_repo_get_fd(repo),
 		    path_packidx, 0, repo->algo);
-		if (err)
+		if (err) {
+			if (err->code == GOT_ERR_LONELY_PACKIDX) {
+				err = NULL;
+				continue;
+			}
 			break;
+		}
 
 		got_object_id_queue_free(&matched_ids);
 
@@ -2598,8 +2606,13 @@ got_repo_get_packfile_info(int *npackfiles, int *nobje
 		err = got_packidx_open(&packidx, got_repo_get_fd(repo),
 		    path_packidx, 0, repo->algo);
 		free(path_packidx);
-		if (err)
+		if (err) {
+			if (err->code == GOT_ERR_LONELY_PACKIDX) {
+				err = NULL;
+				continue;
+			}
 			goto done;
+		}
 
 		if (fstat(packidx->fd, &sb) == -1)
 			goto done;
blob - 7c31b2fe91e06a2c69dab4fb449f2bf62b1e09f1
file + lib/repository_admin.c
--- lib/repository_admin.c
+++ lib/repository_admin.c
@@ -1354,8 +1354,13 @@ repo_purge_redundant_packfiles(struct got_repository *
 	i = 0;
 	TAILQ_FOREACH(pe, &repo->packidx_paths, entry) {
 		err = got_repo_get_packidx(&packidx, pe->path, repo);
-		if (err)
+		if (err) {
+			if (err->code != GOT_ERR_LONELY_PACKIDX) {
+				npacks--;
+				continue;
+			}
 			goto done;
+		}
 
 		pinfo = &sorted[i++];
 		pinfo->path = pe->path;