diff --git a/esy.lock/opam/fix.20181206/opam b/esy.lock/opam/fix.20181206/opam
deleted file mode 100644
index fcdf0423d..000000000
--- a/esy.lock/opam/fix.20181206/opam
+++ /dev/null
@@ -1,24 +0,0 @@
-opam-version: "2.0"
-maintainer: "francois.pottier@inria.fr"
-authors: [
-  "François Pottier <francois.pottier@inria.fr>"
-]
-homepage: "https://gitlab.inria.fr/fpottier/fix"
-dev-repo: "git+https://gitlab.inria.fr/fpottier/fix.git"
-bug-reports: "francois.pottier@inria.fr"
-build: [
-  ["dune" "build" "-p" name "-j" jobs]
-]
-depends: [
-  "ocaml" { >= "4.03" }
-  "dune"
-]
-synopsis: "Facilities for memoization and fixed points"
-url {
-  src:
-    "https://gitlab.inria.fr/fpottier/fix/repository/20181206/archive.tar.gz"
-  checksum: [
-    "md5=ae129ed3822149a7f8c98f975512e534"
-    "sha512=1db240ff0a87200979bf4308e2110a37631f280e36c5f53dde767579ca63992a760eaeb6e1fc9a41c3f3a63d3dc29a3361114ad304cb09e83945ab4213ff5f6d"
-  ]
-}