SCM sum type

runtime/Cargo.lock

@@ -30,6 +30,15 @@ dependencies = [
  "cc",
 ]
 
+[[package]]
+name = "const_panic"
+version = "0.2.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e262cdaac42494e3ae34c43969f9cdeb7da178bdb4b66fa6a1ea2edb4c8ae652"
+dependencies = [
+ "typewit",
+]
+
 [[package]]
 name = "find-msvc-tools"
 version = "0.1.9"
@@ -41,6 +50,7 @@ name = "gyehoek"
 version = "0.1.0"
 dependencies = [
  "bdwgc-alloc",
+ "const_panic",
  "libc",
 ]
 
@@ -55,3 +65,9 @@ name = "shlex"
 version = "1.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0fda2ff0d084019ba4d7c6f371c95d8fd75ce3524c3cb8fb653a3023f6323e64"
+
+[[package]]
+name = "typewit"
+version = "1.15.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "214ca0b2191785cbc06209b9ca1861e048e39b5ba33574b3cedd58363d5bb5f6"