lensfun: 0.3.95 -> 0.3.3

pkgs/development/libraries/lensfun/default.nix

@@ -1,7 +1,7 @@
-{ lib, stdenv, fetchFromGitHub, pkg-config, glib, zlib, libpng, cmake }:
+{ lib, stdenv, fetchFromGitHub, pkg-config, glib, zlib, libpng, cmake, libxml2, python3 }:
 
 let
-  version = "0.3.95";
+  version = "0.3.3";
   pname = "lensfun";
 
   # Fetch a more recent version of the repo containing a more recent lens
@@ -9,8 +9,8 @@ let
   lensfunDatabase = fetchFromGitHub {
     owner = "lensfun";
     repo = "lensfun";
-    rev = "4672d765a17bfef7bc994ca7008cb717c61045d5";
-    sha256 = "00x35xhpn55j7f8qzakb6wl1ccbljg1gqjb93jl9w3mha2bzsr41";
+    rev = "ec9412d27d5fa8f377848a59c768b12c243cb80d";
+    sha256 = "sha256-/u/3oQzac/dQrgFaiYvzT5uQ108XarkXnA2DByA5sic=";
   };
 
 in
@@ -21,16 +21,26 @@ stdenv.mkDerivation {
     owner = "lensfun";
     repo = "lensfun";
     rev = "v${version}";
-    sha256 = "0isli0arns8bmxqpbr1jnbnqh5wvspixdi51adm671f9ngng7x5r";
+    sha256 = "0ixf0f7qv0mc7zrw9w1sb60w833g4rqrfj8cjxwzv2vimqcksccz";
   };
 
   # replace database with a more recent snapshot
+  # the mastr branch uses version 2 profiles, while 0.3.3 requires version 1 profiles,
+  # so we run the conversion tool the project provides,
+  # then untar the verson 1 profiles into the source dir before we build
   prePatch = ''
-    rm -R ./data/db
-    cp -R ${lensfunDatabase}/data/db ./data
+    rm -R data/db
+    python3 ${lensfunDatabase}/tools/lensfun_convert_db_v2_to_v1.py $TMPDIR ${lensfunDatabase}/data/db
+    mkdir -p data/db
+    tar xvf $TMPDIR/db/version_1.tar -C data/db
+    date +%s > data/db/timestamp.txt
   '';
 
-  nativeBuildInputs = [ cmake pkg-config ];
+  nativeBuildInputs = [
+    cmake pkg-config
+    python3 python3.pkgs.lxml # For the db converison
+  ];
+
   buildInputs = [ glib zlib libpng ];
 
   cmakeFlags = [ "-DINSTALL_HELPER_SCRIPTS=OFF" ];