From 3d7801df0553cb86d45be31627f5e8de6a124cdb Mon Sep 17 00:00:00 2001
From: Muki Kiboigo <muki@muki.gg>
Date: Tue, 21 Oct 2025 20:11:21 -0700
Subject: [PATCH 01/11] build v8 with zig

---
 Makefile      | 15 +--------------
 build.zig     | 39 ---------------------------------------
 build.zig.zon |  4 ++--
 3 files changed, 3 insertions(+), 55 deletions(-)

diff --git a/Makefile b/Makefile
index 0034f6b91..b32cdbe3f 100644
--- a/Makefile
+++ b/Makefile
@@ -47,7 +47,7 @@ help:
 
 # $(ZIG) commands
 # ------------
-.PHONY: build build-dev run run-release shell test bench download-zig wpt data get-v8 build-v8 build-v8-dev
+.PHONY: build build-dev run run-release shell test bench download-zig wpt data
 .PHONY: end2end
 
 zig_version = $(shell grep 'recommended_zig_version = "' "vendor/zig-js-runtime/build.zig" | cut -d'"' -f2)
@@ -112,19 +112,6 @@ end2end:
 	@test -d ../demo
 	cd ../demo && go run runner/main.go
 
-## v8
-get-v8:
-	@printf "\e[36mGetting v8 source...\e[0m\n"
-	@$(ZIG) build get-v8
-
-build-v8-dev:
-	@printf "\e[36mBuilding v8 (dev)...\e[0m\n"
-	@$(ZIG) build build-v8
-
-build-v8:
-	@printf "\e[36mBuilding v8...\e[0m\n"
-	@$(ZIG) build -Doptimize=ReleaseSafe build-v8
-
 # Install and build required dependencies commands
 # ------------
 .PHONY: install-submodule
diff --git a/build.zig b/build.zig
index e206b9eb9..2ae4df512 100644
--- a/build.zig
+++ b/build.zig
@@ -131,24 +131,6 @@ pub fn build(b: *Build) !void {
         const wpt_step = b.step("wpt", "WPT tests");
         wpt_step.dependOn(&wpt_cmd.step);
     }
-
-    {
-        // get v8
-        // -------
-        const v8 = b.dependency("v8", .{ .target = target, .optimize = optimize });
-        const get_v8 = b.addRunArtifact(v8.artifact("get-v8"));
-        const get_step = b.step("get-v8", "Get v8");
-        get_step.dependOn(&get_v8.step);
-    }
-
-    {
-        // build v8
-        // -------
-        const v8 = b.dependency("v8", .{ .target = target, .optimize = optimize });
-        const build_v8 = b.addRunArtifact(v8.artifact("build-v8"));
-        const build_step = b.step("build-v8", "Build v8");
-        build_step.dependOn(&build_v8.step);
-    }
 }
 
 fn addDependencies(b: *Build, mod: *Build.Module, opts: *Build.Step.Options) !void {
@@ -172,27 +154,6 @@ fn addDependencies(b: *Build, mod: *Build.Module, opts: *Build.Step.Options) !vo
         v8_mod.addOptions("default_exports", v8_opts);
         mod.addImport("v8", v8_mod);
 
-        const release_dir = if (mod.optimize.? == .Debug) "debug" else "release";
-        const os = switch (target.result.os.tag) {
-            .linux => "linux",
-            .macos => "macos",
-            else => return error.UnsupportedPlatform,
-        };
-        var lib_path = try std.fmt.allocPrint(
-            mod.owner.allocator,
-            "v8/out/{s}/{s}/obj/zig/libc_v8.a",
-            .{ os, release_dir },
-        );
-        std.fs.cwd().access(lib_path, .{}) catch {
-            // legacy path
-            lib_path = try std.fmt.allocPrint(
-                mod.owner.allocator,
-                "v8/out/{s}/obj/zig/libc_v8.a",
-                .{release_dir},
-            );
-        };
-        mod.addObjectFile(mod.owner.path(lib_path));
-
         switch (target.result.os.tag) {
             .macos => {
                 // v8 has a dependency, abseil-cpp, which, on Mac, uses CoreFoundation
diff --git a/build.zig.zon b/build.zig.zon
index 02b217df6..3bf5374b3 100644
--- a/build.zig.zon
+++ b/build.zig.zon
@@ -5,8 +5,8 @@
     .fingerprint = 0xda130f3af836cea0,
     .dependencies = .{
         .v8 = .{
-            .url = "https://github.com/lightpanda-io/zig-v8-fork/archive/84cdca7cd9065f67c7933388f2091810fc485bc6.tar.gz",
-            .hash = "v8-0.0.0-xddH67vcAwCuN2gBsAO8TBzEw523KMroIKGrdZwc-Q-y",
+            .url = "https://github.com/lightpanda-io/zig-v8-fork/archive/fbefa84efdf1b5c1401c930cdc5e99aee508a1f9.tar.gz",
+            .hash = "v8-0.0.0-xddH62UlBAC-QfZy4qD6pF87wF8VjY54IOTu8SnFV4ub",
         },
         //.v8 = .{ .path = "../zig-v8-fork" }
         .@"ada-singleheader" = .{

From d2c90486da2fc578ffca1459de8efb5e012b9bf2 Mon Sep 17 00:00:00 2001
From: Muki Kiboigo <muki@muki.gg>
Date: Sat, 25 Oct 2025 20:13:47 -0700
Subject: [PATCH 02/11] use prebuilt v8

---
 build.zig     | 18 ++++++------------
 build.zig.zon |  4 ++--
 2 files changed, 8 insertions(+), 14 deletions(-)

diff --git a/build.zig b/build.zig
index 2ae4df512..eeb88ef3d 100644
--- a/build.zig
+++ b/build.zig
@@ -46,6 +46,8 @@ pub fn build(b: *Build) !void {
         b.option([]const u8, "git_commit", "Current git commit") orelse "dev",
     );
 
+    const prebuilt_v8_path = b.option([]const u8, "prebuilt_v8_path", "Path to prebuilt libc_v8.a");
+
     const target = b.standardTargetOptions(.{});
     const optimize = b.standardOptimizeOption(.{});
 
@@ -59,7 +61,7 @@ pub fn build(b: *Build) !void {
         .link_libc = true,
         .link_libcpp = true,
     });
-    try addDependencies(b, lightpanda_module, opts);
+    try addDependencies(b, lightpanda_module, opts, prebuilt_v8_path);
 
     {
         // browser
@@ -113,7 +115,7 @@ pub fn build(b: *Build) !void {
             .target = target,
             .optimize = optimize,
         });
-        try addDependencies(b, wpt_module, opts);
+        try addDependencies(b, wpt_module, opts, prebuilt_v8_path);
 
         // compile and install
         const wpt = b.addExecutable(.{
@@ -133,7 +135,7 @@ pub fn build(b: *Build) !void {
     }
 }
 
-fn addDependencies(b: *Build, mod: *Build.Module, opts: *Build.Step.Options) !void {
+fn addDependencies(b: *Build, mod: *Build.Module, opts: *Build.Step.Options, prebuilt_v8_path: ?[]const u8) !void {
     try moduleNetSurf(b, mod);
     mod.addImport("build_config", opts.createModule());
 
@@ -141,6 +143,7 @@ fn addDependencies(b: *Build, mod: *Build.Module, opts: *Build.Step.Options) !vo
     const dep_opts = .{
         .target = target,
         .optimize = mod.optimize.?,
+        .prebuilt_v8_path = prebuilt_v8_path,
     };
 
     mod.addIncludePath(b.path("vendor/lightpanda"));
@@ -153,15 +156,6 @@ fn addDependencies(b: *Build, mod: *Build.Module, opts: *Build.Step.Options) !vo
         const v8_mod = b.dependency("v8", dep_opts).module("v8");
         v8_mod.addOptions("default_exports", v8_opts);
         mod.addImport("v8", v8_mod);
-
-        switch (target.result.os.tag) {
-            .macos => {
-                // v8 has a dependency, abseil-cpp, which, on Mac, uses CoreFoundation
-                mod.addSystemFrameworkPath(.{ .cwd_relative = "/System/Library/Frameworks" });
-                mod.linkFramework("CoreFoundation", .{});
-            },
-            else => {},
-        }
     }
 
     {
diff --git a/build.zig.zon b/build.zig.zon
index 3bf5374b3..e7350a584 100644
--- a/build.zig.zon
+++ b/build.zig.zon
@@ -5,8 +5,8 @@
     .fingerprint = 0xda130f3af836cea0,
     .dependencies = .{
         .v8 = .{
-            .url = "https://github.com/lightpanda-io/zig-v8-fork/archive/fbefa84efdf1b5c1401c930cdc5e99aee508a1f9.tar.gz",
-            .hash = "v8-0.0.0-xddH62UlBAC-QfZy4qD6pF87wF8VjY54IOTu8SnFV4ub",
+            .url = "https://github.com/lightpanda-io/zig-v8-fork/archive/543fb7b40a0e139ebe38e1401942b6506222daf3.tar.gz",
+            .hash = "v8-0.0.0-xddH6-kmBAAdoG6goGoo3pMwzfL73XiFgcj82vYbLym4",
         },
         //.v8 = .{ .path = "../zig-v8-fork" }
         .@"ada-singleheader" = .{

From b0f0df56322d6671378589feb34d9b0fcfbc1817 Mon Sep 17 00:00:00 2001
From: Muki Kiboigo <muki@muki.gg>
Date: Wed, 5 Nov 2025 07:43:09 -0800
Subject: [PATCH 03/11] use zig-v8-fork gclient commit

---
 build.zig.zon | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/build.zig.zon b/build.zig.zon
index e7350a584..493c445e4 100644
--- a/build.zig.zon
+++ b/build.zig.zon
@@ -5,10 +5,10 @@
     .fingerprint = 0xda130f3af836cea0,
     .dependencies = .{
         .v8 = .{
-            .url = "https://github.com/lightpanda-io/zig-v8-fork/archive/543fb7b40a0e139ebe38e1401942b6506222daf3.tar.gz",
-            .hash = "v8-0.0.0-xddH6-kmBAAdoG6goGoo3pMwzfL73XiFgcj82vYbLym4",
+            .url = "https://github.com/lightpanda-io/zig-v8-fork/archive/b23990c358e2b893f19ad639903459e10c4793c4.tar.gz",
+            .hash = "v8-0.0.0-xddH69T4AwBChPFqIhL9GP8BpkPHGRyxpGrt9YS5mNHW",
         },
-        //.v8 = .{ .path = "../zig-v8-fork" }
+        // .v8 = .{ .path = "../zig-v8-fork" },
         .@"ada-singleheader" = .{
             .url = "https://github.com/ada-url/ada/releases/download/v3.3.0/singleheader.zip",
             .hash = "N-V-__8AAPmhFAAw64ALjlzd5YMtzpSrmZ6KymsT84BKfB4s",

From 9477a8be422733dc29262b4936d25aef429516bc Mon Sep 17 00:00:00 2001
From: Muki Kiboigo <muki@muki.gg>
Date: Wed, 19 Nov 2025 09:39:43 -0800
Subject: [PATCH 04/11] wip use local zig-v8-fork

---
 build.zig.zon | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/build.zig.zon b/build.zig.zon
index 493c445e4..eaa7205e7 100644
--- a/build.zig.zon
+++ b/build.zig.zon
@@ -4,11 +4,11 @@
     .version = "0.0.0",
     .fingerprint = 0xda130f3af836cea0,
     .dependencies = .{
-        .v8 = .{
-            .url = "https://github.com/lightpanda-io/zig-v8-fork/archive/b23990c358e2b893f19ad639903459e10c4793c4.tar.gz",
-            .hash = "v8-0.0.0-xddH69T4AwBChPFqIhL9GP8BpkPHGRyxpGrt9YS5mNHW",
-        },
-        // .v8 = .{ .path = "../zig-v8-fork" },
+        // .v8 = .{
+        //     .url = "https://github.com/lightpanda-io/zig-v8-fork/archive/b23990c358e2b893f19ad639903459e10c4793c4.tar.gz",
+        //     .hash = "v8-0.0.0-xddH69T4AwBChPFqIhL9GP8BpkPHGRyxpGrt9YS5mNHW",
+        // },
+        .v8 = .{ .path = "../zig-v8-fork" },
         .@"ada-singleheader" = .{
             .url = "https://github.com/ada-url/ada/releases/download/v3.3.0/singleheader.zip",
             .hash = "N-V-__8AAPmhFAAw64ALjlzd5YMtzpSrmZ6KymsT84BKfB4s",

From 4cbd1da74977eef1127de51cba0996e6e9c183d2 Mon Sep 17 00:00:00 2001
From: Pierre Tachoire <pierre@lightpanda.io>
Date: Tue, 25 Nov 2025 18:08:24 +0100
Subject: [PATCH 05/11] update v8 to gclient branch

---
 build.zig.zon | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/build.zig.zon b/build.zig.zon
index eaa7205e7..4259ba803 100644
--- a/build.zig.zon
+++ b/build.zig.zon
@@ -4,11 +4,11 @@
     .version = "0.0.0",
     .fingerprint = 0xda130f3af836cea0,
     .dependencies = .{
-        // .v8 = .{
-        //     .url = "https://github.com/lightpanda-io/zig-v8-fork/archive/b23990c358e2b893f19ad639903459e10c4793c4.tar.gz",
-        //     .hash = "v8-0.0.0-xddH69T4AwBChPFqIhL9GP8BpkPHGRyxpGrt9YS5mNHW",
-        // },
-        .v8 = .{ .path = "../zig-v8-fork" },
+        .v8 = .{
+            .url = "https://github.com/lightpanda-io/zig-v8-fork/archive/e6e0d07b7760ee0d1a3304152a2a037cdf06f214.tar.gz",
+            .hash = "v8-0.0.0-xddH6yQABACnW_8QSw-kCHqyNpG7a7RZK72LMQOxi8fl",
+        },
+        //.v8 = .{ .path = "../zig-v8-fork" },
         .@"ada-singleheader" = .{
             .url = "https://github.com/ada-url/ada/releases/download/v3.3.0/singleheader.zip",
             .hash = "N-V-__8AAPmhFAAw64ALjlzd5YMtzpSrmZ6KymsT84BKfB4s",

From 90f6495e93c95e3a134547c047c1a019167a9eb9 Mon Sep 17 00:00:00 2001
From: Pierre Tachoire <pierre@lightpanda.io>
Date: Wed, 26 Nov 2025 11:00:18 +0100
Subject: [PATCH 06/11] ci: update install workflow according to v8 changes

---
 .github/actions/install/action.yml |  7 ++-----
 .github/workflows/build.yml        |  8 ++++----
 .github/workflows/e2e-test.yml     |  2 +-
 .github/workflows/zig-test.yml     |  4 ++--
 Dockerfile                         |  6 +++---
 README.md                          | 16 ----------------
 6 files changed, 12 insertions(+), 31 deletions(-)

diff --git a/.github/actions/install/action.yml b/.github/actions/install/action.yml
index e9864c01d..653417ea7 100644
--- a/.github/actions/install/action.yml
+++ b/.github/actions/install/action.yml
@@ -61,11 +61,8 @@ runs:
     - name: install v8
       shell: bash
       run: |
-        mkdir -p v8/out/${{ inputs.os }}/debug/obj/zig/
-        ln -s ${{ inputs.cache-dir }}/v8/libc_v8.a v8/out/${{ inputs.os }}/debug/obj/zig/libc_v8.a
-
-        mkdir -p v8/out/${{ inputs.os }}/release/obj/zig/
-        ln -s ${{ inputs.cache-dir }}/v8/libc_v8.a v8/out/${{ inputs.os }}/release/obj/zig/libc_v8.a
+        mkdir -p v8
+        ln -s ${{ inputs.cache-dir }}/v8/libc_v8.a v8/libc_v8.a
 
     - name: Cache libiconv
       id: cache-libiconv
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index df16af4c9..f1e3c9723 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -38,7 +38,7 @@ jobs:
           arch: ${{env.ARCH}}
 
       - name: zig build
-        run: zig build --release=safe -Doptimize=ReleaseSafe -Dcpu=x86_64 -Dgit_commit=$(git rev-parse --short ${{ github.sha }})
+        run: zig build -Dprebuilt_v8_path=v8 -Doptimize=ReleaseSafe -Dcpu=x86_64 -Dgit_commit=$(git rev-parse --short ${{ github.sha }})
 
       - name: Rename binary
         run: mv zig-out/bin/lightpanda lightpanda-${{ env.ARCH }}-${{ env.OS }}
@@ -76,7 +76,7 @@ jobs:
           arch: ${{env.ARCH}}
 
       - name: zig build
-        run: zig build --release=safe -Doptimize=ReleaseSafe -Dcpu=generic -Dgit_commit=$(git rev-parse --short ${{ github.sha }})
+        run: zig build -Dprebuilt_v8_path=v8 -Doptimize=ReleaseSafe -Dcpu=generic -Dgit_commit=$(git rev-parse --short ${{ github.sha }})
 
       - name: Rename binary
         run: mv zig-out/bin/lightpanda lightpanda-${{ env.ARCH }}-${{ env.OS }}
@@ -116,7 +116,7 @@ jobs:
           arch: ${{env.ARCH}}
 
       - name: zig build
-        run: zig build --release=safe -Doptimize=ReleaseSafe -Dgit_commit=$(git rev-parse --short ${{ github.sha }})
+        run: zig build -Dprebuilt_v8_path=v8 -Doptimize=ReleaseSafe -Dgit_commit=$(git rev-parse --short ${{ github.sha }})
 
       - name: Rename binary
         run: mv zig-out/bin/lightpanda lightpanda-${{ env.ARCH }}-${{ env.OS }}
@@ -159,7 +159,7 @@ jobs:
           arch: ${{env.ARCH}}
 
       - name: zig build
-        run: zig build --release=safe -Doptimize=ReleaseSafe -Dgit_commit=$(git rev-parse --short ${{ github.sha }})
+        run: zig build -Dprebuilt_v8_path=v8 -Doptimize=ReleaseSafe -Dgit_commit=$(git rev-parse --short ${{ github.sha }})
 
       - name: Rename binary
         run: mv zig-out/bin/lightpanda lightpanda-${{ env.ARCH }}-${{ env.OS }}
diff --git a/.github/workflows/e2e-test.yml b/.github/workflows/e2e-test.yml
index 62cff3b18..d28e6fbe7 100644
--- a/.github/workflows/e2e-test.yml
+++ b/.github/workflows/e2e-test.yml
@@ -58,7 +58,7 @@ jobs:
       - uses: ./.github/actions/install
 
       - name: zig build release
-        run: zig build -Doptimize=ReleaseFast -Dcpu=x86_64 -Dgit_commit=$(git rev-parse --short ${{ github.sha }})
+        run: zig build -Dprebuilt_v8_path=v8 -Doptimize=ReleaseFast -Dcpu=x86_64 -Dgit_commit=$(git rev-parse --short ${{ github.sha }})
 
       - name: upload artifact
         uses: actions/upload-artifact@v4
diff --git a/.github/workflows/zig-test.yml b/.github/workflows/zig-test.yml
index f90a6e870..8c395f88d 100644
--- a/.github/workflows/zig-test.yml
+++ b/.github/workflows/zig-test.yml
@@ -56,7 +56,7 @@ jobs:
       - uses: ./.github/actions/install
 
       - name: zig build debug
-        run: zig build
+        run: zig build -Dprebuilt_v8_path=v8
 
       - name: upload artifact
         uses: actions/upload-artifact@v4
@@ -104,7 +104,7 @@ jobs:
       - uses: ./.github/actions/install
 
       - name: zig build test
-        run: zig build test -- --json > bench.json
+        run: zig build  -Dprebuilt_v8_path=v8 test -- --json > bench.json
 
       - name: write commit
         run: |
diff --git a/Dockerfile b/Dockerfile
index 919a9a658..7c0103981 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -50,11 +50,11 @@ RUN case $TARGETPLATFORM in \
     *) ARCH="x86_64" ;; \
     esac && \
     curl --fail -L -o libc_v8.a https://github.com/lightpanda-io/zig-v8-fork/releases/download/${ZIG_V8}/libc_v8_${V8}_linux_${ARCH}.a && \
-    mkdir -p v8/out/linux/release/obj/zig/ && \
-    mv libc_v8.a v8/out/linux/release/obj/zig/libc_v8.a
+    mkdir -p v8/ && \
+    mv libc_v8.a v8/libc_v8.a
 
 # build release
-RUN make build
+RUN zig build -Doptimize=ReleaseSafe -Dprebuilt_v8_path=v8 -Dgit_commit=$$(git rev-parse --short HEAD)
 
 FROM debian:stable-slim
 
diff --git a/README.md b/README.md
index bad00ce58..7f12d5734 100644
--- a/README.md
+++ b/README.md
@@ -246,22 +246,6 @@ Note: when Mimalloc is built in dev mode, you can dump memory stats with the
 env var `MIMALLOC_SHOW_STATS=1`. See
 [https://microsoft.github.io/mimalloc/environment.html](https://microsoft.github.io/mimalloc/environment.html).
 
-**v8**
-
-First, get the tools necessary for building V8, as well as the V8 source code:
-
-```
-make get-v8
-```
-
-Next, build v8. This build task is very long and cpu consuming, as you will build v8 from sources.
-
-```
-make build-v8
-```
-
-For dev env, use `make build-v8-dev`.
-
 ## Test
 
 ### Unit Tests

From c5ab10cf43ec15be903346c4bd17987e1697ca87 Mon Sep 17 00:00:00 2001
From: Muki Kiboigo <muki@muki.gg>
Date: Wed, 26 Nov 2025 21:36:30 -0800
Subject: [PATCH 07/11] use new version of zig-v8-fork

---
 build.zig     | 1 +
 build.zig.zon | 6 +++---
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/build.zig b/build.zig
index eeb88ef3d..bcb24d546 100644
--- a/build.zig
+++ b/build.zig
@@ -144,6 +144,7 @@ fn addDependencies(b: *Build, mod: *Build.Module, opts: *Build.Step.Options, pre
         .target = target,
         .optimize = mod.optimize.?,
         .prebuilt_v8_path = prebuilt_v8_path,
+        .v8_cache_root = b.cache_root.path orelse "./",
     };
 
     mod.addIncludePath(b.path("vendor/lightpanda"));
diff --git a/build.zig.zon b/build.zig.zon
index 4259ba803..d008eac28 100644
--- a/build.zig.zon
+++ b/build.zig.zon
@@ -5,10 +5,10 @@
     .fingerprint = 0xda130f3af836cea0,
     .dependencies = .{
         .v8 = .{
-            .url = "https://github.com/lightpanda-io/zig-v8-fork/archive/e6e0d07b7760ee0d1a3304152a2a037cdf06f214.tar.gz",
-            .hash = "v8-0.0.0-xddH6yQABACnW_8QSw-kCHqyNpG7a7RZK72LMQOxi8fl",
+            .url = "https://github.com/lightpanda-io/zig-v8-fork/archive/5d891273bdbcc55f040a92d5d7ec9a3c5310d714.tar.gz",
+            .hash = "v8-0.0.0-xddH68EABAC7OHTYVpDL9Ah3puTYCtH4gdBbwpHAJ2U8",
         },
-        //.v8 = .{ .path = "../zig-v8-fork" },
+        // .v8 = .{ .path = "../zig-v8-fork" },
         .@"ada-singleheader" = .{
             .url = "https://github.com/ada-url/ada/releases/download/v3.3.0/singleheader.zip",
             .hash = "N-V-__8AAPmhFAAw64ALjlzd5YMtzpSrmZ6KymsT84BKfB4s",

From 883719364305228cd2954203a5e4aa57d26e4c38 Mon Sep 17 00:00:00 2001
From: Muki Kiboigo <muki@muki.gg>
Date: Wed, 26 Nov 2025 21:41:49 -0800
Subject: [PATCH 08/11] point zig directly to cached libc_v8.a

---
 .github/workflows/build.yml    | 8 ++++----
 .github/workflows/e2e-test.yml | 2 +-
 .github/workflows/zig-test.yml | 4 ++--
 Dockerfile                     | 2 +-
 4 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index f1e3c9723..98abeffdd 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -38,7 +38,7 @@ jobs:
           arch: ${{env.ARCH}}
 
       - name: zig build
-        run: zig build -Dprebuilt_v8_path=v8 -Doptimize=ReleaseSafe -Dcpu=x86_64 -Dgit_commit=$(git rev-parse --short ${{ github.sha }})
+        run: zig build -Dprebuilt_v8_path=v8/libc_v8.a -Doptimize=ReleaseSafe -Dcpu=x86_64 -Dgit_commit=$(git rev-parse --short ${{ github.sha }})
 
       - name: Rename binary
         run: mv zig-out/bin/lightpanda lightpanda-${{ env.ARCH }}-${{ env.OS }}
@@ -76,7 +76,7 @@ jobs:
           arch: ${{env.ARCH}}
 
       - name: zig build
-        run: zig build -Dprebuilt_v8_path=v8 -Doptimize=ReleaseSafe -Dcpu=generic -Dgit_commit=$(git rev-parse --short ${{ github.sha }})
+        run: zig build -Dprebuilt_v8_path=v8/libc_v8.a -Doptimize=ReleaseSafe -Dcpu=generic -Dgit_commit=$(git rev-parse --short ${{ github.sha }})
 
       - name: Rename binary
         run: mv zig-out/bin/lightpanda lightpanda-${{ env.ARCH }}-${{ env.OS }}
@@ -116,7 +116,7 @@ jobs:
           arch: ${{env.ARCH}}
 
       - name: zig build
-        run: zig build -Dprebuilt_v8_path=v8 -Doptimize=ReleaseSafe -Dgit_commit=$(git rev-parse --short ${{ github.sha }})
+        run: zig build -Dprebuilt_v8_path=v8/libc_v8.a -Doptimize=ReleaseSafe -Dgit_commit=$(git rev-parse --short ${{ github.sha }})
 
       - name: Rename binary
         run: mv zig-out/bin/lightpanda lightpanda-${{ env.ARCH }}-${{ env.OS }}
@@ -159,7 +159,7 @@ jobs:
           arch: ${{env.ARCH}}
 
       - name: zig build
-        run: zig build -Dprebuilt_v8_path=v8 -Doptimize=ReleaseSafe -Dgit_commit=$(git rev-parse --short ${{ github.sha }})
+        run: zig build -Dprebuilt_v8_path=v8/libc_v8.a -Doptimize=ReleaseSafe -Dgit_commit=$(git rev-parse --short ${{ github.sha }})
 
       - name: Rename binary
         run: mv zig-out/bin/lightpanda lightpanda-${{ env.ARCH }}-${{ env.OS }}
diff --git a/.github/workflows/e2e-test.yml b/.github/workflows/e2e-test.yml
index d28e6fbe7..b436ad359 100644
--- a/.github/workflows/e2e-test.yml
+++ b/.github/workflows/e2e-test.yml
@@ -58,7 +58,7 @@ jobs:
       - uses: ./.github/actions/install
 
       - name: zig build release
-        run: zig build -Dprebuilt_v8_path=v8 -Doptimize=ReleaseFast -Dcpu=x86_64 -Dgit_commit=$(git rev-parse --short ${{ github.sha }})
+        run: zig build -Dprebuilt_v8_path=v8/libc_v8.a -Doptimize=ReleaseFast -Dcpu=x86_64 -Dgit_commit=$(git rev-parse --short ${{ github.sha }})
 
       - name: upload artifact
         uses: actions/upload-artifact@v4
diff --git a/.github/workflows/zig-test.yml b/.github/workflows/zig-test.yml
index 8c395f88d..db54a8936 100644
--- a/.github/workflows/zig-test.yml
+++ b/.github/workflows/zig-test.yml
@@ -56,7 +56,7 @@ jobs:
       - uses: ./.github/actions/install
 
       - name: zig build debug
-        run: zig build -Dprebuilt_v8_path=v8
+        run: zig build -Dprebuilt_v8_path=v8/libc_v8.a
 
       - name: upload artifact
         uses: actions/upload-artifact@v4
@@ -104,7 +104,7 @@ jobs:
       - uses: ./.github/actions/install
 
       - name: zig build test
-        run: zig build  -Dprebuilt_v8_path=v8 test -- --json > bench.json
+        run: zig build  -Dprebuilt_v8_path=v8/libc_v8.a test -- --json > bench.json
 
       - name: write commit
         run: |
diff --git a/Dockerfile b/Dockerfile
index 7c0103981..1b3a2e5d1 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -54,7 +54,7 @@ RUN case $TARGETPLATFORM in \
     mv libc_v8.a v8/libc_v8.a
 
 # build release
-RUN zig build -Doptimize=ReleaseSafe -Dprebuilt_v8_path=v8 -Dgit_commit=$$(git rev-parse --short HEAD)
+RUN zig build -Doptimize=ReleaseSafe -Dprebuilt_v8_path=v8/libc_v8.a -Dgit_commit=$$(git rev-parse --short HEAD)
 
 FROM debian:stable-slim
 

From 28e1d6e8c8a73e24552393aafd6fc53a7bab77f7 Mon Sep 17 00:00:00 2001
From: Pierre Tachoire <pierre@lightpanda.io>
Date: Thu, 4 Dec 2025 09:03:41 +0100
Subject: [PATCH 09/11] bump zig-v8

---
 build.zig.zon | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/build.zig.zon b/build.zig.zon
index d008eac28..515a26bdf 100644
--- a/build.zig.zon
+++ b/build.zig.zon
@@ -5,8 +5,8 @@
     .fingerprint = 0xda130f3af836cea0,
     .dependencies = .{
         .v8 = .{
-            .url = "https://github.com/lightpanda-io/zig-v8-fork/archive/5d891273bdbcc55f040a92d5d7ec9a3c5310d714.tar.gz",
-            .hash = "v8-0.0.0-xddH68EABAC7OHTYVpDL9Ah3puTYCtH4gdBbwpHAJ2U8",
+            .url = "https://github.com/lightpanda-io/zig-v8-fork/archive/01180f73bbf647a51e86778e34a2879eae47e7ec.tar.gz",
+            .hash = "v8-0.0.0-xddH6x8EBADxksPyjuglYL46iImoktNGf4S0qE05B_o2",
         },
         // .v8 = .{ .path = "../zig-v8-fork" },
         .@"ada-singleheader" = .{

From 2e45d547c2519f7826e52545b9002179b7b0e68b Mon Sep 17 00:00:00 2001
From: Pierre Tachoire <pierre@lightpanda.io>
Date: Thu, 4 Dec 2025 09:04:38 +0100
Subject: [PATCH 10/11] bump zig v8 version

---
 .github/actions/install/action.yml | 2 +-
 Dockerfile                         | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/actions/install/action.yml b/.github/actions/install/action.yml
index 653417ea7..0029d22ec 100644
--- a/.github/actions/install/action.yml
+++ b/.github/actions/install/action.yml
@@ -17,7 +17,7 @@ inputs:
   zig-v8:
     description: 'zig v8 version to install'
     required: false
-    default: 'v0.1.33'
+    default: 'v0.1.35'
   v8:
     description: 'v8 version to install'
     required: false
diff --git a/Dockerfile b/Dockerfile
index 1b3a2e5d1..a8dbaa70c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,7 +4,7 @@ ARG MINISIG=0.12
 ARG ZIG=0.15.2
 ARG ZIG_MINISIG=RWSGOq2NVecA2UPNdBUZykf1CCb147pkmdtYxgb3Ti+JO/wCYvhbAb/U
 ARG V8=14.0.365.4
-ARG ZIG_V8=v0.1.33
+ARG ZIG_V8=v0.1.34
 ARG TARGETPLATFORM
 
 RUN apt-get update -yq && \

From 641c6c3f4261e3972af9ae4199acb8646f19b404 Mon Sep 17 00:00:00 2001
From: Muki Kiboigo <muki@muki.gg>
Date: Fri, 5 Dec 2025 07:30:57 -0800
Subject: [PATCH 11/11] update to new zig-v8-fork

---
 .gitignore    | 1 +
 build.zig     | 2 +-
 build.zig.zon | 4 ++--
 3 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/.gitignore b/.gitignore
index ad9ae7b45..f29aa1e88 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,6 @@
 zig-cache
 /.zig-cache/
+/.lp-cache/
 zig-out
 /vendor/netsurf/out
 /vendor/libiconv/
diff --git a/build.zig b/build.zig
index bcb24d546..abed283c1 100644
--- a/build.zig
+++ b/build.zig
@@ -144,7 +144,7 @@ fn addDependencies(b: *Build, mod: *Build.Module, opts: *Build.Step.Options, pre
         .target = target,
         .optimize = mod.optimize.?,
         .prebuilt_v8_path = prebuilt_v8_path,
-        .v8_cache_root = b.cache_root.path orelse "./",
+        .cache_root = b.pathFromRoot(".lp-cache"),
     };
 
     mod.addIncludePath(b.path("vendor/lightpanda"));
diff --git a/build.zig.zon b/build.zig.zon
index 515a26bdf..e63e36dd5 100644
--- a/build.zig.zon
+++ b/build.zig.zon
@@ -5,8 +5,8 @@
     .fingerprint = 0xda130f3af836cea0,
     .dependencies = .{
         .v8 = .{
-            .url = "https://github.com/lightpanda-io/zig-v8-fork/archive/01180f73bbf647a51e86778e34a2879eae47e7ec.tar.gz",
-            .hash = "v8-0.0.0-xddH6x8EBADxksPyjuglYL46iImoktNGf4S0qE05B_o2",
+            .url = "https://github.com/lightpanda-io/zig-v8-fork/archive/e047d2a4d5af5783763f0f6a652fab8982a08603.tar.gz",
+            .hash = "v8-0.0.0-xddH65gMBACRBQMM7EwmVgfi94FJyyX-0jpe5KhXYhfv",
         },
         // .v8 = .{ .path = "../zig-v8-fork" },
         .@"ada-singleheader" = .{