tools: add v8.nix to Nix diff checker

Signed-off-by: Antoine du Hamel <duhamelantoine1995@gmail.com>

Author: aduh95

.github/workflows/test-shared.yml

@@ -199,7 +199,7 @@ jobs:
         id: v8-drv
         run: |
           V8_DRV=$(
-            nix-instantiate -E "builtins.filter (p: p.pname == ''v8'') (import $TAR_DIR/tools/nix/ci-shell.nix {}).buildInputs"
+            nix-instantiate -E "(import $TAR_DIR/tools/nix/ci-shell.nix {}).v8Derivation"
           )
           V8_STORE_PATH=$(nix-store -q --outputs "$V8_DRV")
           echo "V8_DRV=$V8_DRV" >> "$GITHUB_OUTPUT"

shell.nix

@@ -88,6 +88,20 @@ let
   ]
   ++ builtins.map (depName: "--shared-${depName}") sharedV8Deps
   ++ pkgs.lib.optional withPerfetto "--with-perfetto";
+
+  v8Derivation =
+    if useSeparateDerivationForV8 == true then
+      let
+        sharedLibsToMock = pkgs.callPackage ./tools/nix/non-v8-deps-mock.nix { };
+      in
+      pkgs.callPackage ./tools/nix/v8.nix {
+        inherit nativeBuildInputs icu;
+
+        configureFlags = configureFlags ++ sharedLibsToMock.configureFlags ++ [ "--ninja" ];
+        buildInputs = buildInputs ++ [ sharedLibsToMock ];
+      }
+    else
+      useSeparateDerivationForV8;
 in
 pkgs.mkShell {
   inherit nativeBuildInputs;
@@ -98,20 +112,7 @@ pkgs.mkShell {
   buildInputs =
     builtins.attrValues sharedLibDeps
     ++ buildInputs
-    ++ pkgs.lib.optional (useSeparateDerivationForV8 != false) (
-      if useSeparateDerivationForV8 == true then
-        let
-          sharedLibsToMock = pkgs.callPackage ./tools/nix/non-v8-deps-mock.nix { };
-        in
-        pkgs.callPackage ./tools/nix/v8.nix {
-          inherit nativeBuildInputs icu;
-
-          configureFlags = configureFlags ++ sharedLibsToMock.configureFlags ++ [ "--ninja" ];
-          buildInputs = buildInputs ++ [ sharedLibsToMock ];
-        }
-      else
-        useSeparateDerivationForV8
-    );
+    ++ pkgs.lib.optional (useSeparateDerivationForV8 != false) v8Derivation;
 
   packages = devTools ++ benchmarkTools ++ pkgs.lib.optional (ccache != null) ccache;
 
@@ -120,6 +121,10 @@ pkgs.mkShell {
     export CXX="${pkgs.lib.getExe ccache} $CXX"
   '';
 
+  passthru = {
+    inherit v8Derivation;
+  };
+
   env = {
     BUILD_WITH = if (ninja != null) then "ninja" else "make";
     NINJA = pkgs.lib.optionalString (ninja != null) "${pkgs.lib.getExe ninja}";

tools/nix/list-requisites.sh

@@ -59,4 +59,7 @@ REFS=$(nix-store --query --references "$DRV")
 STORE_PATHS=$(echo "$REFS" | xargs nix-store --realise)
 REQUISITES=$(echo "$STORE_PATHS" | xargs nix-store --query --requisites)
 
-echo "$REQUISITES" | sort -k1.45 | uniq
+V8_DRV=$(nix-instantiate -E "(import $BASE_DIR/tools/nix/ci-shell.nix {}).v8Derivation")
+V8_STORE_PATH=$(nix-store -q --outputs "$V8_DRV")
+
+printf '%s\n%s\n' "$REQUISITES" "$V8_STORE_PATH" | sort -k1.45 | uniq