Bump the src_ext / opam-repository cache

Author: dra27

.github/workflows/ci.ml

@@ -514,10 +514,10 @@ let main oc : unit =
     ("CYGWIN_MIRROR", "http://mirrors.kernel.org/sourceware/cygwin/");
     ("CYGWIN_ROOT", "D:\\cygwin");
     ("CYGWIN", "winsymlinks:native");
-    ("CYGWIN_EPOCH", "3");
+    ("CYGWIN_EPOCH", "2");
   ] in
   let keys = [
-    ("archives", "archives-${{ hashFiles('src_ext/Makefile.sources', 'src_ext/Makefile', '.github/scripts/common/preamble.sh', '.github/scripts/main/preamble.sh', '.github/scripts/main/archives-cache.sh') }}-${{ env.OPAM_REPO_SHA }}");
+    ("archives", "archives-1-${{ hashFiles('src_ext/Makefile.sources', 'src_ext/Makefile', '.github/scripts/common/preamble.sh', '.github/scripts/main/preamble.sh', '.github/scripts/main/archives-cache.sh') }}-${{ env.OPAM_REPO_SHA }}");
     ("ocaml-secondary-compiler", "legacy-${{ env.OPAM_REPO_SHA }}");
     ("ocaml-cache", "${{ hashFiles('.github/scripts/main/ocaml-cache.sh', '.github/scripts/main/preamble.sh') }}");
     ("cygwin", "${{ hashFiles('.github/scripts/cygwin.cmd') }}-${{ env.CYGWIN_EPOCH }}");

.github/workflows/main.yml

@@ -46,7 +46,7 @@ env:
   CYGWIN_MIRROR: http://mirrors.kernel.org/sourceware/cygwin/
   CYGWIN_ROOT: D:\cygwin
   CYGWIN: winsymlinks:native
-  CYGWIN_EPOCH: 3
+  CYGWIN_EPOCH: 2
 
 defaults:
   run:
@@ -71,8 +71,8 @@ jobs:
     - name: Determine cache keys
       id: keys
       run: |
-        echo archives=archives-${{ hashFiles('src_ext/Makefile.sources', 'src_ext/Makefile', '.github/scripts/common/preamble.sh', '.github/scripts/main/preamble.sh', '.github/scripts/main/archives-cache.sh') }}-${{ env.OPAM_REPO_SHA }}
-        echo ::set-output name=archives::archives-${{ hashFiles('src_ext/Makefile.sources', 'src_ext/Makefile', '.github/scripts/common/preamble.sh', '.github/scripts/main/preamble.sh', '.github/scripts/main/archives-cache.sh') }}-${{ env.OPAM_REPO_SHA }}
+        echo archives=archives-1-${{ hashFiles('src_ext/Makefile.sources', 'src_ext/Makefile', '.github/scripts/common/preamble.sh', '.github/scripts/main/preamble.sh', '.github/scripts/main/archives-cache.sh') }}-${{ env.OPAM_REPO_SHA }}
+        echo ::set-output name=archives::archives-1-${{ hashFiles('src_ext/Makefile.sources', 'src_ext/Makefile', '.github/scripts/common/preamble.sh', '.github/scripts/main/preamble.sh', '.github/scripts/main/archives-cache.sh') }}-${{ env.OPAM_REPO_SHA }}
         echo ocaml-secondary-compiler=legacy-${{ env.OPAM_REPO_SHA }}
         echo ::set-output name=ocaml-secondary-compiler::legacy-${{ env.OPAM_REPO_SHA }}
         echo ocaml-cache=${{ hashFiles('.github/scripts/main/ocaml-cache.sh', '.github/scripts/main/preamble.sh') }}