diff --git a/Cargo.lock b/Cargo.lock
index a011d47..2dbab54 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1882,6 +1882,17 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "sgf"
+version = "0.1.0"
+dependencies = [
+ "chrono",
+ "nom",
+ "serde",
+ "thiserror",
+ "typeshare",
+]
+
 [[package]]
 name = "sha1"
 version = "0.10.5"
@@ -2227,6 +2238,28 @@ version = "1.16.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "497961ef93d974e23eb6f433eb5fe1b7930b659f06d12dec6fc44a8f554c0bba"
 
+[[package]]
+name = "typeshare"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f44d1a2f454cb35fbe05b218c410792697e76bd868f48d3a418f2cd1a7d527d6"
+dependencies = [
+ "chrono",
+ "serde",
+ "serde_json",
+ "typeshare-annotation",
+]
+
+[[package]]
+name = "typeshare-annotation"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fc670d0e358428857cc3b4bf504c691e572fccaec9542ff09212d3f13d74b7a9"
+dependencies = [
+ "quote",
+ "syn 1.0.109",
+]
+
 [[package]]
 name = "unarray"
 version = "0.1.4"
diff --git a/Cargo.toml b/Cargo.toml
index 62a8742..c4599af 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -10,4 +10,5 @@ members = [
     "emseries",
     "coordinates",
     "flow",
+    "sgf",
 ]
diff --git a/build.sh b/build.sh
index e113203..2a781a0 100755
--- a/build.sh
+++ b/build.sh
@@ -2,7 +2,7 @@
 
 set -euo pipefail
 
-RUST_ALL_TARGETS="dashboard ifc memorycache geo-types fluent-ergonomics cyberpunk-splash screenplay emseries coordinates flow"
+RUST_ALL_TARGETS="dashboard ifc memorycache geo-types fluent-ergonomics cyberpunk-splash screenplay emseries coordinates flow sgf"
 
 build_rust_targets() {
     local CMD=$1