Apply patch for _PyFloat_Unpack4 error for mlat-client

.gitignore

@@ -8,5 +8,8 @@ piaware*.buildinfo
 piaware*.ddeb
 package-*
 
+# package directories
+package-*/
+
 # PyCharm stuff
 .idea/

mlat-client.patch

@@ -0,0 +1,31 @@
+diff -ur mlat-client/modes_reader.c mlat-client.new/modes_reader.c
+--- mlat-client/modes_reader.c  2023-07-19 16:16:39.000000000 +0200
++++ mlat-client.new/modes_reader.c      2023-07-19 16:20:36.640656745 +0200
+@@ -503,6 +503,19 @@
+ {
+     float lat, lon, alt;
+
++#if PY_MAJOR_VERSION >= 3 && PY_MINOR_VERSION >=11
++    lat = PyFloat_Unpack4(data + 4, 1);
++    if (lat == -1.0 && PyErr_Occurred())
++        return NULL;
++
++    lon = PyFloat_Unpack4(data + 8, 1);
++    if (lon == -1.0 && PyErr_Occurred())
++        return NULL;
++
++    alt = PyFloat_Unpack4(data + 12, 1);
++    if (alt == -1.0 && PyErr_Occurred())
++        return NULL;
++#else
+     lat = _PyFloat_Unpack4(data + 4, 1);
+     if (lat == -1.0 && PyErr_Occurred())
+         return NULL;
+@@ -514,6 +527,7 @@
+     alt = _PyFloat_Unpack4(data + 12, 1);
+     if (alt == -1.0 && PyErr_Occurred())
+         return NULL;
++#endif
+
+     return Py_BuildValue("{s:f,s:f,s:f}",
+                          "lat", lat,

sensible-build.sh

@@ -10,12 +10,18 @@ shallow_clone() {
   repo=$1
   branch=$2
   target=$3
+  name="$(basename $3)"
 
   echo "Retrieving $branch from $repo"
   rm -fr $target
   git clone -c advice.detachedHead=false --depth=1 --branch $branch $repo $target
   (cd $target && git checkout --detach $branch)
   (cd $target && git --no-pager log -1 --oneline)
+
+  if [ -f $TOP/$name.patch ]; then
+    echo "applying $name.patch .."
+    patch -d $OUTDIR/$name -p1 <$TOP/$name.patch
+  fi
 }
 
 # setup: