Make rocksdb include liburing, and tell gcc the path during the build

With: strings /nix/store/9skicdac6xs4yww1nd3h7m6xydv4hxlj-rocksdb-9.1.1/lib/librocksdb.so.9|rg io_uring|wc -l
112
With: strings result/bin/conduit |rg io_uring|wc -l
5

Without: strings static-x86_64-unknown-linux-musl-jemalloc |rg io_uring | wc -l
0

Signed-off-by: morguldir <morguldir@protonmail.com>

flake.lock

@@ -171,6 +171,23 @@
         "type": "github"
       }
     },
+    "liburing": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1716398759,
+        "narHash": "sha256-fDlOR13WmwVgMxGUMQXWSZAoy2VhZ5AfZRPF9qmQjSc=",
+        "owner": "axboe",
+        "repo": "liburing",
+        "rev": "49be3cad491ae8b3c40348b8d78ae2b0d3726b78",
+        "type": "github"
+      },
+      "original": {
+        "owner": "axboe",
+        "ref": "master",
+        "repo": "liburing",
+        "type": "github"
+      }
+    },
     "nix-filter": {
       "locked": {
         "lastModified": 1710156097,
@@ -260,6 +277,7 @@
         "fenix": "fenix",
         "flake-compat": "flake-compat_2",
         "flake-utils": "flake-utils_2",
+        "liburing": "liburing",
         "nix-filter": "nix-filter",
         "nixpkgs": "nixpkgs_2",
         "rocksdb": "rocksdb"

flake.nix

@@ -10,6 +10,7 @@
     nixpkgs.url = "github:NixOS/nixpkgs?ref=nixos-unstable";
     # https://github.com/girlbossceo/rocksdb/commit/db6df0b185774778457dabfcbd822cb81760cade
     rocksdb = { url = "github:girlbossceo/rocksdb?ref=v9.1.1"; flake = false; };
+    liburing = { url = "github:axboe/liburing?ref=master"; flake = false; };
   };
 
   outputs = inputs:
@@ -41,6 +42,12 @@
             (builtins.fromJSON (builtins.readFile ./flake.lock))
               .nodes.rocksdb.original.ref;
         });
+        # liburing's configure file is handwritten so the default assumptions don't apply
+        liburing = pkgs.liburing.overrideAttrs {
+          dontAddStaticConfigureFlags = true;
+          dontDisableStatic = true;
+          configureFlags = [];
+        };
       });
 
       scopeHost = mkScope pkgsHost;

nix/pkgs/main/default.nix

@@ -3,6 +3,7 @@
 , inputs
 , lib
 , libiconv
+, liburing
 , pkgsBuildHost
 , rocksdb
 , rust
@@ -57,6 +58,8 @@ rust-jemalloc-sys' = (rust-jemalloc-sys.override {
 
 buildDepsOnlyEnv =
   let
+    uring = featureEnabled "io_uring";
+    extraDeps = lib.optionals uring [pkgsBuildHost.liburing.dev pkgsBuildHost.liburing.out];
     rocksdb' = (rocksdb.override {
       jemalloc = rust-jemalloc-sys';
       # rocksdb fails to build with prefixed jemalloc, which is required on
@@ -70,6 +73,7 @@ buildDepsOnlyEnv =
       # TODO: static rocksdb fails to build on darwin
       # build log at <https://girlboss.ceo/~strawberry/pb/JjGH>
       meta.broken = stdenv.hostPlatform.isStatic && stdenv.isDarwin;
+      propagatedBuildInputs = old.propagatedBuildInputs ++ extraDeps;
     });
   in
   {
@@ -89,7 +93,16 @@ buildDepsOnlyEnv =
 
 buildPackageEnv = {
   CONDUWUIT_VERSION_EXTRA = inputs.self.shortRev or inputs.self.dirtyShortRev or "";
-} // buildDepsOnlyEnv;
+} // buildDepsOnlyEnv // {
+  CARGO_BUILD_RUSTFLAGS =
+     let
+       uring = default_features || builtins.elem "io_uring" features;
+     in
+       buildDepsOnlyEnv.CARGO_BUILD_RUSTFLAGS
+       + lib.optionalString uring " -L${pkgsBuildHost.liburing}/lib/ -luring";
+  };
+
+
 
 commonAttrs = {
   inherit