classes/package: Use gzip for extended package data

The master version of extended package data uses zstd for efficient
compression, but it relies on the zstd tool to be present on the host
system. Since dunfell supports older distros, we don't want to add this
tool as an additional requirement so switch to using gzip instead.

(From OE-Core rev: 1c7d555379c4b0962bccd018870989050d87675f)

Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 6 insertions, 8 deletions

diff --git a/meta/classes/package.bbclass b/meta/classes/package.bbclass
index 84fdafa8fe..49d30caef7 100644
--- a/meta/classes/package.bbclass
+++ b/meta/classes/package.bbclass
@@ -1470,7 +1470,7 @@ PKGDATA_VARS = "PN PE PV PR PKGE PKGV PKGR LICENSE DESCRIPTION SUMMARY RDEPENDS
 python emit_pkgdata() {
     from glob import glob
     import json
-    import bb.compress.zstd
+    import gzip
 
     def process_postinst_on_target(pkg, mlprefix):
         pkgval = d.getVar('PKG_%s' % pkg)
@@ -1610,9 +1610,8 @@ fi
 
             sf.write('%s_%s: %d\n' % ('PKGSIZE', pkg, total_size))
 
-        subdata_extended_file = pkgdatadir + "/extended/%s.json.zstd" % pkg
-        num_threads = int(d.getVar("BB_NUMBER_THREADS"))
-        with bb.compress.zstd.open(subdata_extended_file, "wt", encoding="utf-8", num_threads=num_threads) as f:
+        subdata_extended_file = pkgdatadir + "/extended/%s.json.gz" % pkg
+        with gzip.open(subdata_extended_file, "wt", encoding="utf-8") as f:
             json.dump(extended_data, f, sort_keys=True, separators=(",", ":"))
 
         # Symlinks needed for rprovides lookup
diff --git a/meta/lib/oe/packagedata.py b/meta/lib/oe/packagedata.py
index 00f7dc1f3d..feb834c0e3 100644
--- a/meta/lib/oe/packagedata.py
+++ b/meta/lib/oe/packagedata.py
@@ -59,12 +59,11 @@ def read_subpkgdata_dict(pkg, d):
 
 def read_subpkgdata_extended(pkg, d):
     import json
-    import bb.compress.zstd
+    import gzip
 
-    fn = d.expand("${PKGDATA_DIR}/extended/%s.json.zstd" % pkg)
+    fn = d.expand("${PKGDATA_DIR}/extended/%s.json.gz" % pkg)
     try:
-        num_threads = int(d.getVar("BB_NUMBER_THREADS"))
-        with bb.compress.zstd.open(fn, "rt", encoding="utf-8", num_threads=num_threads) as f:
+        with gzip.open(fn, "rt", encoding="utf-8") as f:
             return json.load(f)
     except FileNotFoundError:
         return None