luochen1990

#!/usr/bin/env nix-shell
#!nix-shell -i python --packages python311 python311Packages.pypdf2

import PyPDF2

def merge_pdfs(input_path_list: list[str], output_path: str):
    pdfWriter = PyPDF2.PdfWriter()

    for input_path in input_path_list:
        pdf1 = PyPDF2.PdfReader(open(input_path, "rb"))

luochen1990

{
    "files.trimTrailingWhitespace": true,
    "python.languageServer": "Pylance",
    "python.analysis.typeCheckingMode": "strict",
    "python.analysis.diagnosticSeverityOverrides": {
        "reportImportCycles": "warning",
        "reportUnnecessaryComparison": "information",
        "reportUnnecessaryIsInstance": "information",
        "reportUnnecessaryContains": "information",
        "reportUnusedImport": "information",

luochen1990

#NOTE: not working yet, need debuging

{pkgs ? import <nixpkgs> {}, ...}:

pkgs.stdenv.mkDerivation rec {
  pname = "popo";
  version = "3.56.1";

  src = pkgs.fetchurl {
    url = "https://popo.netease.com/file/popolinux/popo_${version}_amd64_ubuntu.deb";

luochen1990

{
  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
  inputs.flake-utils.url = "github:numtide/flake-utils";

  outputs = { self, nixpkgs, flake-utils }:
    flake-utils.lib.eachDefaultSystem (system:
      let
        pkgs = nixpkgs.legacyPackages.${system};
        hpkgs = pkgs.haskell.packages.ghc923;
      in rec {

luochen1990

#!/usr/bin/env nix-shell
#! nix-shell -p "expect" -i expect

#set timeout -1

cd ~/ws/nixos

spawn nix repl

send ":lf .\n"

luochen1990

#!/usr/bin/env -S bash -c 'nix-shell --pure $0 -A env'

# Usage:
# 1. run directly to enter bash (inside venv): `./venv-py37.nix`
# 2. build a standalone executable: `nix bundle -f ./venv-py37.nix`  #this not works yet since it cause nested `unshare -U` call
# 3. run bash with extra arguments: `nix run -f ./venv-py37.nix '' -- -c 'python --version'`
# More:
# 1. commit id of nixpkgs can be found here: https://lazamar.co.uk/nix-versions/?channel=nixpkgs-unstable&package=python3

let

luochen1990

#!/usr/bin/env bash

#echo '$@ = ' "$@"

nixfile="$1"; shift
#echo "nixfile =" "$nixfile"

outpath="$(nix-build --pure $nixfile)"
#echo "outpath =" "$outpath"

luochen1990

#!/usr/bin/env nix-shell
#! nix-shell -p "ghc"
#! nix-shell -i "runghc"

-- https://www.zhihu.com/question/23999095/answer/2254625328

import Control.Monad (guard)

brain_states :: (Int, Int) -> [Int]
brain_states (x, y) = [z | z <- [x + y, abs(x - y)], z > 0]

luochen1990

#!/usr/bin/env nix-shell
#! nix-shell shell.nix

{ pkgs ? import <nixpkgs> {} }:

(pkgs.buildFHSUserEnv {
  name = "devbox";
  targetPkgs = pkgs: (with pkgs; [
    python38
    python38Packages.pip

luochen1990

#!/usr/bin/env nix-build

{ nixpkgs ? (import <nixpkgs> {}) }: with nixpkgs;
stdenv.mkDerivation rec {
  pname = "some-c-project";
  version = "0.1";
  src = ./.;
  nativeBuildInputs = [ cmake ]; #replace to your build time dependencies
  buildInputs = [ libssl ]; #replace to your runtime dependencies
}