diff --git a/nix/dev-shell.nix b/nix/dev-shell.nix
--- a/nix/dev-shell.nix
+++ b/nix/dev-shell.nix
@@ -3,18 +3,24 @@
 , lib
 , amqp-cpp
 , arcanist
+, boost
 , cargo
 , cmake
 , cryptopp
 , darwin
+, folly
+, fmt
 , grpc
 , libiconv
 , libuv
 , nodejs-16_x
+, olm
+, openssl
 , pkg-config
 , protobuf_3_15_cmake
 , python2
 , python3
+, sqlite
 , watchman
 , rustfmt
 , yarn
@@ -54,6 +60,12 @@
   # include any libraries buildInputs
   buildInputs = [
     protobuf_3_15_cmake # exposes both a library and a command, thus should appear in both inputs
+    folly # cpp tools
+    fmt # needed for folly
+    boost # needed for folly
+    olm # needed for CryptoTools
+    sqlite # needed for sqlite_orm
+    openssl # needed for grpc
   ] ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
     CoreFoundation
     CoreServices
diff --git a/nix/overlay.nix b/nix/overlay.nix
--- a/nix/overlay.nix
+++ b/nix/overlay.nix
@@ -26,4 +26,11 @@
     # around calling strlen() with null
     php = prev.php80;
   });
+
+  olm = prev.olm.overrideAttrs(oldAttrs: {
+    # *.hh files aren't meant to be used externally, so we patch installation to add it
+    postInstall = ''
+      cp $NIX_BUILD_TOP/${oldAttrs.src.name}/include/olm/*.h* ''${!outputDev}/include/olm
+    '';
+  });
 }