getting there

Dockerfile

@@ -7,7 +7,7 @@ ADD llvm-snapshot.gpg.key /etc/apt/trusted.gpg.d/apt.llvm.org.asc
 
 RUN apt-get update && \
     DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
-        zstd binaryen cmake git make zlib1g-dev \
+        zstd binaryen cmake git make zlib1g-dev less tmux \
         llvm-15 llvm-15-dev liblld-15-dev lld-15 clang-15 libclang-15-dev \
         llvm-16 llvm-16-dev liblld-16-dev lld-16 clang-16 libclang-16-dev \
         llvm-17 llvm-17-dev liblld-17-dev lld-17 clang-17 libclang-17-dev \

README.md

@@ -0,0 +1 @@
+docker run -ti --rm -v ~/code:/x -w /x zig-repro sh -c 'useradd -ms /bin/bash motiejus && cd zig && tmux new-session su motiejus'

run

@@ -9,19 +9,75 @@ set -xeuo pipefail
 #     Merge pull request #13560 from ziglang/wasi-bootstrap
 #     
 #     Nuke the C++ implementation of Zig from orbit using WASI
+MERGE_WASI_BOOTSTRAP=0.10.0-610-ge7d28344fa 
+git checkout $MERGE_WASI_BOOTSTRAP
 
+# commit 3ba916584db5485c38ebf2390e8d22bc6d81bf8e
+# Author: Andrew Kelley <andrew@ziglang.org>
+# Date:   2022-11-05T03:47:19+02:00
+# 
+#     actually remove stage1
+REMOVE_STAGE1=0.10.0-542-g3ba916584d
+git revert --no-edit $REMOVE_STAGE1
 
-# Merge pull request #13560 from ziglang/wasi-bootstrap
-git checkout 0.10.0-610-ge7d28344fa 
+# commit 28514476ef8c824c3d189d98f23d0f8d23e496ea
+# Author: Andrew Kelley <andrew@ziglang.org>
+# Date:   2022-11-01T05:29:55+02:00
+# 
+#     remove `-fstage1` option
+#     
+#     After this commit, the self-hosted compiler does not offer the option to
+#     use stage1 as a backend anymore.
+REMOVE_FSTAGE1=0.10.0-539-g28514476ef
+git revert --no-edit -X theirs $REMOVE_FSTAGE1
 
-# parent of "remove `-fstage1` option"
-git checkout 0.10.0-538-gbf316e5506 CMakeLists.txt build.zig lib/build_runner.zig lib/std/build.zig lib/std/build/TranslateCStep.zig src deps
+git mv stage1/config.zig.in src
 
-mkdir build
-cd build
+# removing the wasi-based stage1 just to be sure
+git rm stage1/zig1.wasm.zst
+
+sed -i '/have_stage1/ s/true/false/' src/config.zig.in
+
+git checkout $REMOVE_FSTAGE1~1 build.zig CMakeLists.txt
+
+echo "Building the C++ (stage1) implementation"
+mkdir build; pushd build
   CC=clang-15 CXX=clang++-15 cmake ..
-make -j$(nproc) install
+  make -j"$(nproc)" install
+popd
 
-echo "stage1 complete. Building zig1.wasm.zst"
+echo "C++ implementation in build/stage3/bin/zig. Will build zig1.wasm.zst."
 
 git reset --hard
+git checkout $MERGE_WASI_BOOTSTRAP
+rm stage1/zig1.wasm.zst
+
+build/stage3/bin/zig build update-zig1
+
+echo "stage1/zig1.wasm.zst built. Bootstrapping zig with it."
+
+rm -fr build
+mkdir build; pushd build
+  CC=clang-15 CXX=clang++-15 cmake ..
+  make -j"$(nproc)" install
+popd
+
+echo "Done"
+true && exit
+
+# commit 89d1ccc477c1dbc8bb8d13ad2598ef0190c25898
+# Author: Veikka Tuominen <git@vexu.eu>
+# Date:   Fri Dec 9 18:40:01 2022 +0200
+# 
+#     replace zig1.wasm to the removal of BoundFn
+REPLACE_ZIG1_WASM=0.10.0-677-g89d1ccc477
+git archive --prefix=zig-$REPLACE_ZIG1_WASM/ $REPLACE_ZIG1_WASM | tar -C .. -x --exclude="stage1/zig1.wasm*"
+
+pushd ../zig-$REPLACE_ZIG1_WASM
+  ../zig/build/stage3/bin/zig update-zig1
+  mkdir build; pushd build
+    CC=clang-15 CXX=clang++-15 cmake ..
+    make -j"$(nproc)" install
+  popd
+
+popd