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Add a third decompiler backend built on angr so ToCode runs even when neither IDA nor radare2 is available. The backend implements the existing DecompilerSession protocol and produces a structurally identical export tree (verified file-for-file and key-for-key against an IDA export); decompilation quality is angr-level, which is accepted. - backends/angr.py: AngrSession over CFGFast + angr's decompiler, with clean C signature construction and stripping of angr's leading extern/typedef/comment blocks so the exporter parses prototypes correctly. - base.py: widen backend types, add probe_r2/probe_angr, and make choose_backend an IDA -> r2 -> angr auto chain. - analysis.py/exporter.py/cli.py: wire angr into the factory, parallel worker opener, and --backend choices. - pyproject.toml: optional [angr] extra and a mypy override so the optional import does not break type checking when angr is absent. - tests: choose_backend fallback coverage and an angr smoke test that skips when angr is not installed. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The angr fallback is an optional extra (~450 MB of native deps), so it is not installed by default. Add an opt-in install path so users without IDA or radare2 can get a working backend out-of-the-box: - install.sh: --full flag, plus combinable extras handling for --dev/--full. - install.ps1: -Full switch with the same extras handling. - README: document --full / -Full and the angr install options. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
uv sync populates the project's .venv, but uv tool install builds a separate isolated environment for the `tocode` command -- which never received the angr extra, so `tocode --backend angr` reported the backend as unavailable even after `install.sh --full`. Pass the runtime extra to the tool-install path spec (DIR[angr]) so the installed command sees it. dev stays out of the tool environment (build/test tooling only). Also handle the no-pip case on the non-uv path: probe `python -m pip`, try ensurepip, and fail with an actionable message instead of a raw "No module named pip". Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Modern distros and Homebrew mark their Python "externally managed", so `pip install --user` is refused with an externally-managed-environment error. Create a dedicated virtual environment instead (as pipx/uv do) and expose only the tocode launcher on PATH, so deps stay isolated and the system interpreter is untouched. If venv itself is unavailable, fail with an actionable hint (install python3-venv, or use uv). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Importing angr loads native extensions and emits noisy warnings (e.g. "failed loading unicornlib.so") at import time. Pulling it in at module top meant every run paid that cost even with --backend ida/r2. Defer the AngrSession import to the angr branch so non-angr runs never touch it. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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