mirror of
https://github.com/block/buzz.git
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4d2eb52a6c
Signed-off-by: Will Pfleger <pfleger.will@gmail.com> Co-authored-by: npub1mn7jgtj4w2pd0g0zeuhxsa6jy6p0rewxz4kujt98my82ahfmp72sxjexk7 <dcfd242e557282d7a1e2cf2e6877522682f1e5c6156dc92ca7d90eaedd3b0f95@sprout-oss.stage.blox.sqprod.co>
74 lines
3.4 KiB
Bash
Executable File
74 lines
3.4 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -euo pipefail
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# Stage a genuine, non-WSL bash for the Windows MCP shell tool. The app is
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# self-contained — we cannot assume Git for Windows is installed — so we bundle
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# bash rather than probing for an install.
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#
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# There is no standalone "bash for Windows" upstream: working Windows bash ships
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# only inside git-for-windows. We download PortableGit and keep ONLY the MSYS2
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# bash runtime (`usr/` + `bin/`), dropping the `mingw64/` git-program subtree as
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# one separable unit (~200MB of git.exe etc. the MCP shell never invokes). We do
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# NOT trim INSIDE `usr/`: bash loads `msys-2.0.dll` and other libraries lazily,
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# and load-bearing pieces (terminfo, gawk libs) live alongside the docs there, so
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# a hand-trimmed copy can pass an existence check yet fail mid-command with a
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# cryptic error — exactly the bug class this fixes. The retained runtime is the
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# untouched, complete closure git-for-windows maintains.
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#
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# Self-contained (no release-binary precondition) so CI can call it directly to
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# exercise the download/extract/drop path on a real Windows runner — the only
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# automated gate on this logic before it ships to users.
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#
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# Single arg: the destination dir for the staged tree (the real MSYS2 bash lands
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# at <dest>/usr/bin/bash.exe). Idempotent: a `.stage-complete` marker, written last,
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# proves a whole prior stage and skips the re-download; a partial stage lacks it
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# and re-extracts cleanly.
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#
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# PATH CONTRACT (keep byte-identical across three files):
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# - dest `git-bash` (== desktop/src-tauri/binaries/git-bash) is the
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# `bundle.resources` SOURCE in desktop/scripts/build-release-config.mjs.
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# - that resource's TARGET `git-bash` is staged next to the exe by Tauri's
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# Windows installer, and crates/buzz-dev-mcp/src/shell.rs resolves
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# `git-bash\usr\bin\bash.exe` relative to its own executable at runtime.
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GIT_BASH_DIR=${1:?usage: stage-windows-bash.sh <dest-dir>}
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PORTABLEGIT_VERSION="2.54.0"
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PORTABLEGIT_TAG="v${PORTABLEGIT_VERSION}.windows.1"
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PORTABLEGIT_EXE="PortableGit-${PORTABLEGIT_VERSION}-64-bit.7z.exe"
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PORTABLEGIT_URL="https://github.com/git-for-windows/git/releases/download/${PORTABLEGIT_TAG}/${PORTABLEGIT_EXE}"
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STAGE_MARKER="$GIT_BASH_DIR/.stage-complete"
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if [[ -f "$STAGE_MARKER" ]]; then
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echo "PortableGit bash already staged at $GIT_BASH_DIR"
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exit 0
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fi
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echo "Downloading PortableGit ${PORTABLEGIT_VERSION}..."
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tmp_dir=$(mktemp -d -t portablegit.XXXXXX)
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trap 'rm -rf "$tmp_dir"' EXIT
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tmp_sfx="$tmp_dir/portablegit.7z.exe"
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extract_dir="$tmp_dir/extract"
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curl -fsSL "$PORTABLEGIT_URL" -o "$tmp_sfx"
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# PortableGit is a 7-Zip self-extracting archive; -o/-y are its SFX flags,
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# so we don't need a separate 7z on PATH.
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chmod +x "$tmp_sfx"
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"$tmp_sfx" -y "-o$extract_dir"
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# Keep the bash runtime whole, drop the separable git-program subtree.
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rm -rf "$extract_dir/mingw64"
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rm -rf "$GIT_BASH_DIR"
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mkdir -p "$GIT_BASH_DIR"
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cp -a "$extract_dir/." "$GIT_BASH_DIR/"
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rm -rf "$tmp_dir"
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trap - EXIT
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[[ -f "$GIT_BASH_DIR/usr/bin/bash.exe" ]] || {
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echo "Error: PortableGit extracted but $GIT_BASH_DIR/usr/bin/bash.exe is missing" >&2
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exit 1
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}
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# Written last, only after cp -a and the integrity check both succeed, so it is
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# positive proof the whole tree landed. An interrupted stage never writes it, so
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# the idempotency skip falls through to a clean re-extract.
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touch "$STAGE_MARKER"
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echo "PortableGit bash staged at $GIT_BASH_DIR (mingw64/ dropped)"
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