Add new required dependencies for cardano-node 10.7

Add the following new dependencies:

 * snappy (cardano-rpc)
 * protobuf (cardano-rpc)
 * liburing (lmdb)

Author: sgillespie

flake.nix

@@ -25,6 +25,7 @@
           static-openssl = (final.openssl.override { static = true; });
           static-zlib = final.zlib.override { shared = false; };
           static-pcre = final.pcre.override { shared = false; };
+          static-snappy = final.snappy.override { static = true; };
           static-libblst = final.libblst.overrideDerivation (old: {
             configureFlags = old.configureFlags ++ [ "--enable-static" "--disable-shared" ];
             buildPhase = ''
@@ -41,6 +42,36 @@
               sed 's/^ILIBS\>.*/ILIBS = liblmdb.a/' -i Makefile
             '';
           });
+          # liburing always builds both static and dynamic libraries, so we remove the .so
+          # target the same way nixpkgs does for isStatic platforms.
+          static-liburing = final.liburing.overrideAttrs (old: {
+            dontdisableStatic = true;
+            # There are several files in man/ that have the same filename but with
+            # different case. When building on macOS, Nix renames these files with a
+            # "~nix~case~hack~" suffix, and then the Makefile won't be able to find them
+            # during the installPhase. Copy these back over the original. This should not
+            # cause any case conflicts, because it will be built in a Linux VM.
+            preInstall = ''
+              # Rename any case-hacked files back to their original names
+              for f in man/*~nix~case~hack~*; do
+                if [ -f "$f" ]; then
+                  mv "$f" "''${f%~nix~case~hack~*}"
+                fi
+              done
+            '';
+
+            postInstall = ''
+              # Always builds both static and dynamic libraries, so we need to remove the
+              # dynamic libraries.
+              rm $out/lib/liburing*.so*
+
+              # Copy the examples into $bin. Most reverse dependency of
+              # this package should reference only the $out output
+              for file in $(find ./examples -executable -type f); do
+                install -Dm555 -t "$bin/bin" "$file"
+              done
+            '';
+          });
          });
 
          # nixpkgs defines happy = justStaticExecutables haskellPackages.happy

iog-libs.nix

@@ -22,13 +22,16 @@ in {
   # Present in ALL shell types (dynamic, static, cross-js, cross-windows).
   crypto = map resolve [ "libblst" "libsodium-vrf" "secp256k1" ];
 
-  # Data-storage libraries (ouroboros-consensus / cardano-lmdb).
+  # Data-storage libraries (ouroboros-consensus / cardano-lmdb / cardano-rpc).
   # Dynamic and static shells only — not meaningful for JS/Windows cross.
-  data = map resolve [ "lmdb" ];
+  data = 
+    map resolve ([ "lmdb" "snappy" ] 
+    # liburing is Linux-only (io_uring is a Linux kernel feature).
+    ++ pkgs.lib.optionals pkgs.stdenv.isLinux [ "liburing" ]);
 
   # Development/CI tools (not linked into builds). Dynamic and static only.
-  tools = with pkgs; [ cbor-diag cddl gh icu jq yq-go ];
+  tools = with pkgs; [ cbor-diag cddl gh icu jq protobuf yq-go ];
 
-  # Minimal tool set for cross-compilation targets (CDDL/CBOR validation).
-  cross-tools = with pkgs; [ cbor-diag cddl ];
+  # Build tools for cross-compilation targets (validation / code generation).
+  cross-tools = with pkgs; [ cbor-diag cddl protobuf ];
 }