common/travis/xpkgdiff.sh: add CI script to compare pkgs with xpkgdiff

.github/workflows/build.yaml

@@ -94,6 +94,14 @@ jobs:
           "$here/common/travis/show_files.sh" "$BOOTSTRAP" "$ARCH"
           )
 
+      - name: Compare to previous
+        run: |
+          (
+          here="$(pwd)"
+          cd /
+          "$here/common/travis/xpkgdiff.sh" "$BOOTSTRAP" "$ARCH"
+          )
+
       - name: Check file conflicts
         if: matrix.config.arch == 'x86_64' # the arch indexed in xlocate
         run: |

common/travis/xpkgdiff.sh

@@ -0,0 +1,24 @@
+#!/bin/sh
+#
+# xpkgdiff.sh
+
+export XBPS_TARGET_ARCH="$2" XBPS_DISTDIR=/hostrepo XBPS_HOSTDIR="$HOME/hostdir"
+export DIFF='diff --unified=0 --report-identical-files --suppress-common-lines
+ --color=always --label REPO --label BUILT'
+
+while read -r pkg; do
+	for subpkg in $(xsubpkg $pkg); do
+		if xbps-query --repository=$HOME/hostdir/binpkgs \
+					  --repository=$HOME/hostdir/binpkgs/nonfree \
+					  -i "$subpkg" >&/dev/null; then
+			/bin/echo -e "\x1b[34mFile Diff of $subpkg:\x1b[0m"
+			xpkgdiff -f $subpkg
+			/bin/echo -e "\x1b[34mMetadata Diff of $subpkg:\x1b[0m"
+			xpkgdiff -S $subpkg
+			/bin/echo -e "\x1b[34mDependency Diff of $subpkg:\x1b[0m"
+			xpkgdiff -x $subpkg
+		else
+			/bin/echo -e "\x1b[33m$subpkg wasn't found\x1b[0m"
+		fi
+	done
+done < /tmp/templates