diff --git a/src/environment/jbuild b/lib_protocol_environment_sigs/jbuild
similarity index 89%
rename from src/environment/jbuild
rename to lib_protocol_environment_sigs/jbuild
index b9d235e57..2b4c0c8fd 100644
--- a/src/environment/jbuild
+++ b/lib_protocol_environment_sigs/jbuild
@@ -50,6 +50,6 @@
 
 (library
  ((name tezos_protocol_environment_sigs)
-  (public_name tezos.protocol_environment.sigs)
-  (flags (:standard -safe-string -w -9-32 -nopervasives))
+  (public_name tezos-protocol-environment-sigs)
+  (flags (:standard -nopervasives))
   (modules ("V1"))))
diff --git a/src/environment/sigs_packer/jbuild b/lib_protocol_environment_sigs/sigs_packer/jbuild
similarity index 62%
rename from src/environment/sigs_packer/jbuild
rename to lib_protocol_environment_sigs/sigs_packer/jbuild
index 7e59f8ad0..4ae1e3367 100644
--- a/src/environment/sigs_packer/jbuild
+++ b/lib_protocol_environment_sigs/sigs_packer/jbuild
@@ -2,9 +2,7 @@
 
 (executable
   ((name sigs_packer)
-   (public_name tezos-protocol-environment-sigs-packer)
-   (package tezos)
-   (flags (:standard -w -9-32 -safe-string))))
+   (public_name tezos-protocol-environment-sigs.packer)))
 
 (alias
  ((name runtest_indent)
diff --git a/src/environment/sigs_packer/sigs_packer.ml b/lib_protocol_environment_sigs/sigs_packer/sigs_packer.ml
similarity index 100%
rename from src/environment/sigs_packer/sigs_packer.ml
rename to lib_protocol_environment_sigs/sigs_packer/sigs_packer.ml
diff --git a/lib_protocol_environment_sigs/tezos-protocol-environment-sigs.opam b/lib_protocol_environment_sigs/tezos-protocol-environment-sigs.opam
new file mode 100644
index 000000000..774a9b33a
--- /dev/null
+++ b/lib_protocol_environment_sigs/tezos-protocol-environment-sigs.opam
@@ -0,0 +1,19 @@
+opam-version: "1.2"
+version: "dev"
+maintainer: "contact@tezos.com"
+authors: [ "Tezos devteam" ]
+homepage: "https://www.tezos.com/"
+bug-reports: "https://gitlab.com/tezos/tezos/issues"
+dev-repo: "https://gitlab.com/tezos/tezos.git"
+license: "unreleased"
+depends: [
+  "ocamlfind" { build }
+  "jbuilder" { build & >= "1.0+beta15" }
+  "tezos-stdlib" { test }
+]
+build: [
+  [ "jbuilder" "build" "-p" name "-j" jobs ]
+]
+build-test: [
+  [ "jbuilder" "runtest" "-p" name "-j" jobs ]
+]
diff --git a/src/environment/v1/RPC.mli b/lib_protocol_environment_sigs/v1/RPC.mli
similarity index 100%
rename from src/environment/v1/RPC.mli
rename to lib_protocol_environment_sigs/v1/RPC.mli
diff --git a/src/environment/v1/array.mli b/lib_protocol_environment_sigs/v1/array.mli
similarity index 100%
rename from src/environment/v1/array.mli
rename to lib_protocol_environment_sigs/v1/array.mli
diff --git a/src/environment/v1/base58.mli b/lib_protocol_environment_sigs/v1/base58.mli
similarity index 100%
rename from src/environment/v1/base58.mli
rename to lib_protocol_environment_sigs/v1/base58.mli
diff --git a/src/environment/v1/blake2B.mli b/lib_protocol_environment_sigs/v1/blake2B.mli
similarity index 100%
rename from src/environment/v1/blake2B.mli
rename to lib_protocol_environment_sigs/v1/blake2B.mli
diff --git a/src/environment/v1/buffer.mli b/lib_protocol_environment_sigs/v1/buffer.mli
similarity index 100%
rename from src/environment/v1/buffer.mli
rename to lib_protocol_environment_sigs/v1/buffer.mli
diff --git a/src/environment/v1/bytes.mli b/lib_protocol_environment_sigs/v1/bytes.mli
similarity index 100%
rename from src/environment/v1/bytes.mli
rename to lib_protocol_environment_sigs/v1/bytes.mli
diff --git a/src/environment/v1/compare.mli b/lib_protocol_environment_sigs/v1/compare.mli
similarity index 100%
rename from src/environment/v1/compare.mli
rename to lib_protocol_environment_sigs/v1/compare.mli
diff --git a/src/environment/v1/context.mli b/lib_protocol_environment_sigs/v1/context.mli
similarity index 100%
rename from src/environment/v1/context.mli
rename to lib_protocol_environment_sigs/v1/context.mli
diff --git a/src/environment/v1/data_encoding.mli b/lib_protocol_environment_sigs/v1/data_encoding.mli
similarity index 100%
rename from src/environment/v1/data_encoding.mli
rename to lib_protocol_environment_sigs/v1/data_encoding.mli
diff --git a/src/environment/v1/ed25519.mli b/lib_protocol_environment_sigs/v1/ed25519.mli
similarity index 100%
rename from src/environment/v1/ed25519.mli
rename to lib_protocol_environment_sigs/v1/ed25519.mli
diff --git a/src/environment/v1/error_monad.mli b/lib_protocol_environment_sigs/v1/error_monad.mli
similarity index 100%
rename from src/environment/v1/error_monad.mli
rename to lib_protocol_environment_sigs/v1/error_monad.mli
diff --git a/src/environment/v1/fitness.mli b/lib_protocol_environment_sigs/v1/fitness.mli
similarity index 100%
rename from src/environment/v1/fitness.mli
rename to lib_protocol_environment_sigs/v1/fitness.mli
diff --git a/src/environment/v1/format.mli b/lib_protocol_environment_sigs/v1/format.mli
similarity index 100%
rename from src/environment/v1/format.mli
rename to lib_protocol_environment_sigs/v1/format.mli
diff --git a/src/environment/v1/hash.mli b/lib_protocol_environment_sigs/v1/hash.mli
similarity index 100%
rename from src/environment/v1/hash.mli
rename to lib_protocol_environment_sigs/v1/hash.mli
diff --git a/src/environment/v1/hex_encode.mli b/lib_protocol_environment_sigs/v1/hex_encode.mli
similarity index 100%
rename from src/environment/v1/hex_encode.mli
rename to lib_protocol_environment_sigs/v1/hex_encode.mli
diff --git a/src/environment/v1/int32.mli b/lib_protocol_environment_sigs/v1/int32.mli
similarity index 100%
rename from src/environment/v1/int32.mli
rename to lib_protocol_environment_sigs/v1/int32.mli
diff --git a/src/environment/v1/int64.mli b/lib_protocol_environment_sigs/v1/int64.mli
similarity index 100%
rename from src/environment/v1/int64.mli
rename to lib_protocol_environment_sigs/v1/int64.mli
diff --git a/src/environment/v1/json.mli b/lib_protocol_environment_sigs/v1/json.mli
similarity index 100%
rename from src/environment/v1/json.mli
rename to lib_protocol_environment_sigs/v1/json.mli
diff --git a/src/environment/v1/list.mli b/lib_protocol_environment_sigs/v1/list.mli
similarity index 100%
rename from src/environment/v1/list.mli
rename to lib_protocol_environment_sigs/v1/list.mli
diff --git a/src/environment/v1/logging.mli b/lib_protocol_environment_sigs/v1/logging.mli
similarity index 100%
rename from src/environment/v1/logging.mli
rename to lib_protocol_environment_sigs/v1/logging.mli
diff --git a/src/environment/v1/lwt.mli b/lib_protocol_environment_sigs/v1/lwt.mli
similarity index 100%
rename from src/environment/v1/lwt.mli
rename to lib_protocol_environment_sigs/v1/lwt.mli
diff --git a/src/environment/v1/lwt_list.mli b/lib_protocol_environment_sigs/v1/lwt_list.mli
similarity index 100%
rename from src/environment/v1/lwt_list.mli
rename to lib_protocol_environment_sigs/v1/lwt_list.mli
diff --git a/src/environment/v1/lwt_sequence.mli b/lib_protocol_environment_sigs/v1/lwt_sequence.mli
similarity index 100%
rename from src/environment/v1/lwt_sequence.mli
rename to lib_protocol_environment_sigs/v1/lwt_sequence.mli
diff --git a/src/environment/v1/mBytes.mli b/lib_protocol_environment_sigs/v1/mBytes.mli
similarity index 100%
rename from src/environment/v1/mBytes.mli
rename to lib_protocol_environment_sigs/v1/mBytes.mli
diff --git a/src/environment/v1/map.mli b/lib_protocol_environment_sigs/v1/map.mli
similarity index 100%
rename from src/environment/v1/map.mli
rename to lib_protocol_environment_sigs/v1/map.mli
diff --git a/src/environment/v1/micheline.mli b/lib_protocol_environment_sigs/v1/micheline.mli
similarity index 100%
rename from src/environment/v1/micheline.mli
rename to lib_protocol_environment_sigs/v1/micheline.mli
diff --git a/src/environment/v1/pervasives.mli b/lib_protocol_environment_sigs/v1/pervasives.mli
similarity index 100%
rename from src/environment/v1/pervasives.mli
rename to lib_protocol_environment_sigs/v1/pervasives.mli
diff --git a/src/environment/v1/set.mli b/lib_protocol_environment_sigs/v1/set.mli
similarity index 100%
rename from src/environment/v1/set.mli
rename to lib_protocol_environment_sigs/v1/set.mli
diff --git a/src/environment/v1/string.mli b/lib_protocol_environment_sigs/v1/string.mli
similarity index 100%
rename from src/environment/v1/string.mli
rename to lib_protocol_environment_sigs/v1/string.mli
diff --git a/src/environment/v1/tezos_data.mli b/lib_protocol_environment_sigs/v1/tezos_data.mli
similarity index 100%
rename from src/environment/v1/tezos_data.mli
rename to lib_protocol_environment_sigs/v1/tezos_data.mli
diff --git a/src/environment/v1/time.mli b/lib_protocol_environment_sigs/v1/time.mli
similarity index 100%
rename from src/environment/v1/time.mli
rename to lib_protocol_environment_sigs/v1/time.mli
diff --git a/src/environment/v1/updater.mli b/lib_protocol_environment_sigs/v1/updater.mli
similarity index 100%
rename from src/environment/v1/updater.mli
rename to lib_protocol_environment_sigs/v1/updater.mli
diff --git a/src/environment/v1/z.mli b/lib_protocol_environment_sigs/v1/z.mli
similarity index 100%
rename from src/environment/v1/z.mli
rename to lib_protocol_environment_sigs/v1/z.mli
diff --git a/src/compiler/jbuild b/src/compiler/jbuild
index 5724a2931..e482f111c 100644
--- a/src/compiler/jbuild
+++ b/src/compiler/jbuild
@@ -6,14 +6,14 @@
     (run ${bin:ocp-ocamlres} -format ocaml -o ${@}
            ${lib:stdlib:camlinternalFormatBasics.cmi}
            ${path:tezos_protocol_compiler__Registerer.cmi}
-           ${path:../environment/tezos_protocol_environment_sigs.cmi}
-           ${path:../environment/tezos_protocol_environment_sigs__V1.cmi}))))
+           ${lib:tezos-protocol-environment-sigs:tezos_protocol_environment_sigs.cmi}
+           ${lib:tezos-protocol-environment-sigs:tezos_protocol_environment_sigs__V1.cmi}))))
 
 (library
  ((name tezos_protocol_compiler)
   (public_name tezos.protocol_compiler)
   (libraries (tezos-base
-              tezos_protocol_environment_sigs
+              tezos-protocol-environment-sigs
               compiler-libs
               compiler-libs.optcomp
               lwt.unix