grahamc

{ pkgs ? import <nixpkgs> {} }:
let
  emacsPackaging = pkgs.emacsPackagesNg;

  my-mode = emacsPackaging.trivialBuild {
    pname = "my-mode";
    version = "1970-01-01";
    src = pkgs.writeText "default.el" ''
      (global-set-key (kbd "<end>") 'end-of-line)
      (global-set-key (kbd "<home>") 'beginning-of-line)

garbas

    Pyramid14Env = pkgs.buildEnv {
      name = "pyramid14env";
      ignoreCollisions = true;
      paths = with pkgs; [
        python27Full
        python27Packages.buildout
        python27Packages.virtualenv
        python27Packages.recursivePthLoader
        pyramid14Packages.pyramid
        pyramid14Packages.waitress

tonyc

Using strace and lsof to debug blocked processes

You can use strace on a specific pid to figure out what a specific process is doing, e.g.:

strace -fp <pid>

You might see something like:

select(9, [3 5 8], [], [], {0, 999999}) = 0 (Timeout)