diff --git a/pkgs/by-name/li/libblake3/package.nix b/pkgs/by-name/li/libblake3/package.nix
index 6e7b9277ebe3..ec149e70c696 100644
--- a/pkgs/by-name/li/libblake3/package.nix
+++ b/pkgs/by-name/li/libblake3/package.nix
@@ -13,6 +13,11 @@ stdenv.mkDerivation (finalAttrs: {
   pname = "libblake3";
   version = "1.8.2";
 
+  outputs = [
+    "out"
+    "dev"
+  ];
+
   src = fetchFromGitHub {
     owner = "BLAKE3-team";
     repo = "BLAKE3";
diff --git a/pkgs/tools/package-management/nix/common-autoconf.nix b/pkgs/tools/package-management/nix/common-autoconf.nix
index 01b87cddc17d..1d7ed8cba374 100644
--- a/pkgs/tools/package-management/nix/common-autoconf.nix
+++ b/pkgs/tools/package-management/nix/common-autoconf.nix
@@ -111,7 +111,7 @@ let
       "shadowstack"
     ] ++ lib.optional stdenv.hostPlatform.isMusl "fortify";
 
-    nativeInstallCheckInputs = lib.optional atLeast224 [
+    nativeInstallCheckInputs = lib.optionals atLeast224 [
       git
       man
     ];
diff --git a/pkgs/tools/package-management/nix/modular/src/libutil/package.nix b/pkgs/tools/package-management/nix/modular/src/libutil/package.nix
index 5b1723b8ac2d..c4d2aefd6a39 100644
--- a/pkgs/tools/package-management/nix/modular/src/libutil/package.nix
+++ b/pkgs/tools/package-management/nix/modular/src/libutil/package.nix
@@ -27,9 +27,7 @@ mkMesonLibrary (finalAttrs: {
     [
       brotli
     ]
-    ++ lib.optional (lib.versionAtLeast version "2.27") [
-      libblake3
-    ]
+    ++ lib.optional (lib.versionAtLeast version "2.27") libblake3
     ++ [
       libsodium
       openssl