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-rw-r--r--gnu/packages/patches/crawl-upgrade-saves.patch83
1 files changed, 83 insertions, 0 deletions
diff --git a/gnu/packages/patches/crawl-upgrade-saves.patch b/gnu/packages/patches/crawl-upgrade-saves.patch
new file mode 100644
index 0000000000..301942dc30
--- /dev/null
+++ b/gnu/packages/patches/crawl-upgrade-saves.patch
@@ -0,0 +1,83 @@
+Store the crawl version in the textdatabases in SAVEDIR and
+upgrade the databases when the crawl version changes.
+
+By default crawl checks for a mtime difference on files in DATADIR to see if an
+upgrade is required, but guix nulls all file dates,
+and crawl would never upgrade saves.
+
+--- a/source/database.cc 2016-05-31 09:56:08.000000000 +0200
++++ a/source/database.cc 2017-06-05 03:00:19.270632107 +0200
+@@ -25,6 +25,7 @@
+ #include "syscalls.h"
+ #include "threads.h"
+ #include "unicode.h"
++#include "version.h"
+
+ // TextDB handles dependency checking the db vs text files, creating the
+ // db, loading, and destroying the DB.
+@@ -55,6 +56,7 @@
+ vector<string> _input_files;
+ DBM* _db;
+ string timestamp;
++ string version;
+ TextDB *_parent;
+ const char* lang() { return _parent ? Options.lang_name : 0; }
+ public:
+@@ -165,7 +167,7 @@
+
+ TextDB::TextDB(const char* db_name, const char* dir, ...)
+ : _db_name(db_name), _directory(dir),
+- _db(nullptr), timestamp(""), _parent(0), translation(0)
++ _db(nullptr), timestamp(""), version(""), _parent(0), translation(0)
+ {
+ va_list args;
+ va_start(args, dir);
+@@ -187,7 +189,7 @@
+ : _db_name(parent->_db_name),
+ _directory(parent->_directory + Options.lang_name + "/"),
+ _input_files(parent->_input_files), // FIXME: pointless copy
+- _db(nullptr), timestamp(""), _parent(parent), translation(nullptr)
++ _db(nullptr), timestamp(""), version(""), _parent(parent), translation(nullptr)
+ {
+ }
+
+@@ -202,6 +204,9 @@
+ return false;
+
+ timestamp = _query_database(*this, "TIMESTAMP", false, false, true);
++ version = _query_database(*this, "VERSION", false, false, true);
++ if (version.empty())
++ return false;
+ if (timestamp.empty())
+ return false;
+
+@@ -245,6 +250,9 @@
+ string ts;
+ bool no_files = true;
+
++ if (string(Version::Long) != version)
++ return true;
++
+ for (const string &file : _input_files)
+ {
+ string full_input_path = _directory + file;
+@@ -261,7 +269,7 @@
+ ts += buf;
+ }
+
+- if (no_files && timestamp.empty())
++ if (no_files && timestamp.empty() && version.empty())
+ {
+ // No point in empty databases, although for simplicity keep ones
+ // for disappeared translations for now.
+@@ -321,7 +329,10 @@
+ _store_text_db(full_input_path, _db);
+ }
+ }
++
++ string current_version = string(Version::Long);
+ _add_entry(_db, "TIMESTAMP", ts);
++ _add_entry(_db, "VERSION", current_version);
+
+ dbm_close(_db);
+ _db = 0;