Update charon pin to local commit when developing

1 files changed, 11 insertions, 0 deletions

diff --git a/scripts/update-charon-pin.sh b/scripts/update-charon-pin.sh
index 63dfe3b6..1fa706ae 100755
--- a/scripts/update-charon-pin.sh
+++ b/scripts/update-charon-pin.sh
@@ -3,5 +3,16 @@ if ! which jq 2> /dev/null 1>&2; then
     echo 'Error: command `jq` not found; please install it.'
     exit 1
 fi
+
+if [ -L charon ]; then
+    echo '`./charon` is a symlink; we using the commit there for our new pin.'
+    COMMIT="$(git -C charon rev-parse HEAD)"
+    nix flake lock --override-input charon "github:aeneasverif/charon/$COMMIT"
+else
+    echo 'Pinning the latest commit from Charon `main`'
+    nix flake lock --update-input charon
+fi
+
+# Keep the commit revision in `./charon-pin` as well so that non-nix users can know which commit to use.
 echo '# This is the commit from https://github.com/AeneasVerif/charon that should be used with this version of aeneas.' > ./charon-pin
 jq -r .nodes.charon.locked.rev flake.lock >> ./charon-pin