Commit graph

19 commits

Author SHA1 Message Date
Eelco Dolstra
3c67df928f Add sugar for defining a variable
‘x = <expr>’ is short for ‘:a { x = <expr>; }’.  Note that the
right-hand side refers to the original scope, so you get:

  nix-repl> x = 1
  nix-repl> x = x + 1
  nix-repl> x
  2

rather than an infinite recursion.
2013-09-09 13:56:53 +02:00
Eelco Dolstra
4b33c2dd4c Add help (:?) 2013-09-09 13:22:33 +02:00
Eelco Dolstra
e133e91410 Support tab-completion on attribute sets
Example:

$ nix-repl '<nixos>'

> config.services.xserver.desktop<TAB>

comletes to

> config.services.xserver.desktopManager

You also get suggestions if there are multiple matches:

> config.services.xserver.desktopManager.kde4
config.services.xserver.desktopManager.kde4.enable
config.services.xserver.desktopManager.kde4.phononBackends
2013-09-09 12:00:33 +02:00
Eelco Dolstra
8e765b8876 printValue: Show assertion errors inline 2013-09-09 11:37:05 +02:00
Eelco Dolstra
e587aec123 printValue: Don't show lists/attribute sets twice 2013-09-09 11:14:43 +02:00
Eelco Dolstra
7e3625f924 Improved value display
By default, we don't recurse into attribute sets or lists when
printing a value.  However, the new :p command does recurse.
2013-09-07 00:35:54 +02:00
Eelco Dolstra
c6f2b89c0e Restore affinity 2013-09-06 21:00:36 +02:00
Eelco Dolstra
0abdf4beaa Add basic variable name completion 2013-09-06 19:51:59 +02:00
Eelco Dolstra
cf4c29d90a Load files specified on the command line
For example:

  $ nix-repl '<nixpkgs>' '<nixos>'
  Welcome to Nix version 1.6pre3215_2c1ecf8. Type :? for help.

  Loading ‘<nixpkgs>’...
  Added 3337 variables.

  Loading ‘<nixos>’...
  Added 7 variables.

  nix-repl>
2013-09-06 15:20:06 +02:00
Eelco Dolstra
b5944ac4ff Add a command :s to start a nix-shell for a derivation 2013-09-06 15:05:18 +02:00
Eelco Dolstra
c6712a007f Add a command :b to build a derivation 2013-09-06 14:58:53 +02:00
Eelco Dolstra
ad0dd359b4 Don't exit on SIGINT during evaluation
However, this may leave thunks in black-holed state, so it's not
really safe.
2013-09-06 13:20:35 +02:00
Eelco Dolstra
0b419c048b Use readline history file 2013-09-06 13:14:28 +02:00
Eelco Dolstra
4fb82d3d80 Handle SIGINT to cancel the current line 2013-09-06 13:01:02 +02:00
Eelco Dolstra
504563ea44 Fix build 2013-09-06 11:54:49 +02:00
Eelco Dolstra
0f6279d874 Add a command :l for loading a file into scope
Example:

nix-repl> :l <nixpkgs>

nix-repl> lib.range 0 10
[ 0 1 2 3 4 5 6 7 8 9 10 ]

nix-repl> :l <nixos>

nix-repl> config.boot.kernelModules
[ "vboxdrv" "vboxnetadp" ... ]
2013-09-02 16:48:41 +00:00
Eelco Dolstra
3202206d1d Add a command :t for showing the type of an expression 2013-09-02 16:00:48 +00:00
Eelco Dolstra
287c88ca59 Support adding variables to the scope
The command ":a <expr>" evaluates <expr> and adds the attributes in
the resulting attribute set to the interpreter scope.  For instance:

nix-repl> :a import <nixpkgs> {}

nix-repl> lib.range 0 10
[ 0 1 2 3 4 5 6 7 8 9 10 ]
2013-09-02 17:53:58 +02:00
Eelco Dolstra
e90569905e Initial version of nix-repl
This program interactively reads a Nix expression from the user,
evaluates it, and prints the result.
2013-09-02 15:18:15 +02:00