You're encountering a few issues in Termux, primarily related to **platform compatibility** and **environment setup**. Let's go through them step by step and fix everything. --- ### 🔴 Problem 1: `uv` Installation Fails on `aarch64-linux-android` ```bash ERROR: there isn't a download for your platform aarch64-linux-android ``` This is expected — **`uv` (by Astral) does not yet support Android/aarch64 Linux natively**, even though it's available for many other platforms. > ✅ **Solution**: Use `pipx` or `pip` instead of `uv` until official Android support arrives. --- ### 🔴 Problem 2: Rust Installation Failed Due to `sudo` / `$HOME` Mismatch ```bash error: $HOME differs from euid-obtained home directory: you may be using sudo error: $HOME directory: /data/data/com.termux/files/home error: euid-obtained home directory: /data ``` This happens because you ran the rustup installer with `sudo`, which changes the effective user ID (`euid`) and thus the home directory (`/data`), but `$HOME` is still set to `/data/data/com.termux/files/home`. > ❌ Never use `sudo` in Termux! It breaks things. #### ✅ Fix: Run the rustup installer **without `sudo`**: ```bash curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y ``` > ✔️ This should now work fine. After installation, run: ```bash source $HOME/.cargo/env ``` Then verify: ```bash rustc --version cargo --version ``` If you see version output → success! --- ### 🟡 Problem 3: `rustls-platform-verifier` Panic on Android ```text thread 'main' panicked at ... Expect rustls-platform-verifier to be initialized ``` This is a known issue when building certain Rust crates (like `reqwest`, `hyper`, etc.) on Android due to missing TLS backend initialization. #### ✅ Solution: Install `openssl` and ensure proper linking ```bash pkg install openssl ``` Then, re-install any problematic packages via Cargo with: ```bash cargo build --no-default-features --features "native-tls" ``` Or better: use `cargo` with `--no-default-features` + explicit features if needed. Alternatively, avoid using `rustls` directly — prefer `native-tls` on Android. > 💡 Tip: For most apps, just use `reqwest` with `default-features = false` and `features = ["blocking"]`: ```toml # In your Cargo.toml [dependencies] reqwest = { version = "1.0", default-features = false, features = ["blocking"] } ``` --- ### ✅ Recommended Setup for Python & Rust in Termux Since you installed `python` and `pip`, here’s how to make it all work smoothly: #### 1. Install Python & Pip (already done): ```bash pkg install python python-pip ``` #### 2. Upgrade pip: ```bash pip install --upgrade pip ``` #### 3. Install useful tools: ```bash pip install requests beautifulsoup4 lxml jupyter notebook ``` #### 4. Optional: Install `pipx` (for managing Python tools cleanly) ```bash pkg install python-pip pip install pipx ``` Then add to your shell profile: ```bash echo 'export PATH="$HOME/.local/bin:$PATH"' >> ~/.bashrc source ~/.bashrc ``` Now you can do: ```bash pipx install black flake8 ``` --- ### 🛠 Bonus: Fix Repository Issues (if needed) If you ever get mirror errors: ```bash termux-change-repo ``` Choose a reliable mirror like `https://mirrors.sustech.edu.cn/termux/apt/termux-main`. --- ### ✅ Summary: What You Should Do Now ```bash # 1. Reinstall rustup without sudo curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y # 2. Source cargo env source $HOME/.cargo/env # 3. Install OpenSSL (fixes rustls panic) pkg install openssl # 4. Use pip/pipx instead of uv (not supported on Android yet) pip install --upgrade pip pip install requests jupyter # 5. Avoid sudo entirely in Termux! ``` --- ### 📌 Final Notes - `uv` is **not currently supported** on Android (`aarch64-linux-android`). Wait for future releases or use `pip`/`pipx`. - Never use `sudo` in Termux — it breaks `$HOME` and permissions. - Use `termux-change-repo` if mirrors fail. - Consider using `nix` or `docker` later if you need more complex environments. --- Let me know what you’re trying to build (Python script? Rust app?), and I’ll help you set up the perfect toolchain! 🚀