diff options
| -rw-r--r-- | guix/nar.scm | 3 | ||||
| -rw-r--r-- | nix/guix-register/guix-register.cc | 34 | ||||
| -rw-r--r-- | tests/guix-register.sh | 19 |
3 files changed, 47 insertions, 9 deletions
diff --git a/guix/nar.scm b/guix/nar.scm index 0a7187c2dd..b95cbd648d 100644 --- a/guix/nar.scm +++ b/guix/nar.scm @@ -324,8 +324,7 @@ held." (rename-file source target) ;; Register TARGET. As a side effect, it resets the timestamps of all - ;; its files, recursively. However, it doesn't attempt to deduplicate - ;; its files like 'importPaths' does (FIXME). + ;; its files, recursively, and runs a deduplication pass. (register-path target #:references references #:deriver deriver)) diff --git a/nix/guix-register/guix-register.cc b/nix/guix-register/guix-register.cc index ed5ab23e41..92eedab9f5 100644 --- a/nix/guix-register/guix-register.cc +++ b/nix/guix-register/guix-register.cc @@ -57,6 +57,7 @@ information about which store files are valid, and what their \ references are."; #define GUIX_OPT_STATE_DIRECTORY 1 +#define GUIX_OPT_DEDUPLICATE 2 static const struct argp_option options[] = { @@ -64,6 +65,8 @@ static const struct argp_option options[] = "Open the store that lies under DIRECTORY" }, { "state-directory", GUIX_OPT_STATE_DIRECTORY, "DIRECTORY", 0, "Use DIRECTORY as the state directory of the target store" }, + { "no-deduplication", GUIX_OPT_DEDUPLICATE, 0, 0, + "Disable automatic deduplication of registered store items" }, { 0, 0, 0, 0, 0 } }; @@ -71,6 +74,9 @@ static const struct argp_option options[] = /* Prefix of the store being populated. */ static std::string prefix; +/* Whether to deduplicate the registered store items. */ +static bool deduplication = true; + /* Parse a single option. */ static error_t parse_opt (int key, char *arg, struct argp_state *state) @@ -97,6 +103,10 @@ parse_opt (int key, char *arg, struct argp_state *state) break; } + case GUIX_OPT_DEDUPLICATE: + deduplication = false; + break; + case ARGP_KEY_ARG: { std::ifstream *file; @@ -136,6 +146,7 @@ static struct argp argp = { options, parse_opt, 0, doc }; This is really meant as an internal format. */ static void register_validity (LocalStore *store, std::istream &input, + bool optimize = true, bool reregister = true, bool hashGiven = false, bool canonicalise = true) { @@ -176,6 +187,19 @@ register_validity (LocalStore *store, std::istream &input, } store->registerValidPaths (infos); + + /* XXX: When PREFIX is non-empty, store->linksDir points to the original + store's '.links' directory, which means 'optimisePath' would try to link + to that instead of linking to the target store. Thus, disable + deduplication in this case. */ + if (optimize && prefix.empty ()) + { + /* Make sure deduplication is enabled. */ + settings.autoOptimiseStore = true; + + foreach (ValidPathInfos::const_iterator, i, infos) + store->optimisePath (i->path); + } } @@ -200,17 +224,17 @@ main (int argc, char *argv[]) { argp_parse (&argp, argc, argv, 0, 0, 0); - /* Instantiate the store. This creates any missing directories among - 'settings.nixStore', 'settings.nixDBPath', etc. */ - LocalStore store; - if (!prefix.empty ()) /* Under the --prefix tree, the final name of the store will be NIX_STORE_DIR. Set it here so that the database uses file names prefixed by NIX_STORE_DIR and not PREFIX + NIX_STORE_DIR. */ settings.nixStore = NIX_STORE_DIR; - register_validity (&store, *input); + /* Instantiate the store. This creates any missing directories among + 'settings.nixStore', 'settings.nixDBPath', etc. */ + LocalStore store; + + register_validity (&store, *input, deduplication); } catch (std::exception &e) { diff --git a/tests/guix-register.sh b/tests/guix-register.sh index 3f261d7bef..e99f5c6075 100644 --- a/tests/guix-register.sh +++ b/tests/guix-register.sh @@ -43,13 +43,28 @@ $new_file 0 EOF -# Make sure it's valid, and delete it. +# Register an idendical file, and make sure it gets deduplicated. +new_file2="$new_file-duplicate" +cat "$new_file" > "$new_file2" +guix-register <<EOF +$new_file2 + +0 +EOF + +guile -c " + (exit (= (stat:ino (stat \"$new_file\")) + (stat:ino (stat \"$new_file2\"))))" + +# Make sure both are valid, and delete them. guile -c " (use-modules (guix store)) (define s (open-connection)) (exit (and (valid-path? s \"$new_file\") + (valid-path? s \"$new_file2\") (null? (references s \"$new_file\")) - (pair? (delete-paths s (list \"$new_file\")))))" + (null? (references s \"$new_file2\")) + (pair? (delete-paths s (list \"$new_file\" \"$new_file2\")))))" # |