文章列表： 2 篇
Why PIP_NO_USER=1 installs to global env
Linux C++ Setup and Run with cpprun
2026-06-29
Why PIP_NO_USER=1 installs to global env
2026-06-29 ~ 2026-10-16
programming python debugging pip

The note is generated by GLM5.2.

A pip install run inside an activated conda env kept landing in ~/.local
instead of the env’s site-packages. This is what was going on.

TL;DR — everything you need is here

  • Symptom. Inside an activated conda env, pip install <pkg> installs to
    ~/.local/lib/python3.10/site-packages (shared across every py3.10 env)
    instead of envs/<env>/lib/.../site-packages.
  • Cause. The container image exports PIP_NO_USER=1 globally. Despite the
    name, this forces user-site installs — the NO_ is ignored. PIP_NO_USER
    behaves identically to PIP_USER.
  • Fix. Any one of:
    1
2
3

    unset PIP_NO_USER          # in ~/.bashrc (permanent, interactive shells)
PIP_NO_USER=0 pip install …   # per-command
pip install --no-user …       # per-command (CLI flag inverts correctly)

Quick reference:

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2025-10-23
Linux C++ Setup and Run with cpprun
2025-10-23 ~ 2026-10-15
programming cpp linux

The note is generated by ChatGPT.

1. Install C++ Environment

在 Linux 或 WSL 里，C/C++ 程序需要编译器。常用的是 g++（GNU C++ compiler）。
同时，调试程序需要 gdb（GNU Debugger）。

运行：

1
2

sudo apt update
sudo apt install -y build-essential gdb

检查是否安装成功：

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