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Provide missing command suggestions, Ubuntu style

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If the user tries to run a program that doesn't exist from Bash, the
program name is looked up in a database that maps to Nix package
names.  If it is found, we print out a message like:

  $ pdflatex
  The program ‘pdflatex’ is currently not installed. It is provided by
  several packages. You can install it by typing one of the following:
    nix-env -i tetex
    nix-env -i texlive-core

If the environment variable $NIX_AUTO_INSTALL is set, the command is
installed and executed automatically:

  $ hello --version
  The program ‘hello’ is currently not installed. It is provided by
  the package ‘hello’, which I will now install for you.
  installing `hello-2.8'
  hello (GNU hello) 2.8
  Copyright (C) 2011 Free Software Foundation, Inc. ...

To use this, you must currently manually put the SQLite programs
database in /var/lib/nixos/programs.sqlite.  In the future, this file
should be provided as part of the NixOS channel so it gets updated
automatically.  To get a test version:

  $ curl http://nixos.org/~eelco/programs.sqlite.xz | xz -d > /var/lib/nixos/programs.sqlite
This commit is contained in:
Eelco Dolstra 2013-01-30 14:42:30 +01:00
parent 2f97304833
commit b89f941b20
4 changed files with 98 additions and 1 deletions
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2
modules/programs/bash/bash.nix
View file

@ -33,7 +33,7 @@ let
options = {
environment.promptInit = mkOption {
environment.promptInit = mkOption {
default = ''
# Provide a nice prompt.
PROMPT_COLOR="1;31m"