# Test lindenmayer installation

**URL:** <https://racket.discourse.group/t/test-lindenmayer-installation/4336>\
**Category:** General\
**Created:** [July 30, 2026, 8:57pm UTC](https://racket.discourse.group/t/test-lindenmayer-installation/4336 "2026-07-30T20:57:43Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![jsampson45](https://avatars.discourse-cdn.com/v4/letter/j/77aa72/32.png) [@jsampson45](https://racket.discourse.group/u/jsampson45)\
**Post date:** [July 30, 2026, 8:57pm UTC](https://racket.discourse.group/t/test-lindenmayer-installation/4336/1 "2026-07-30T20:57:43Z")

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How do I test the installation of the Lindenmayer package on Racket v. 9.2. in Windows 10? I just want to see if my installation works, so that it is worthwhile learning it.

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<div class="post-metadata">

**Author:** ![robby](https://yyz2.discourse-cdn.com/free1/user_avatar/racket.discourse.group/robby/32/7_2.png) [@robby](https://racket.discourse.group/u/robby)\
**Post date:** [August 2, 2026, 1:34am UTC](https://racket.discourse.group/t/test-lindenmayer-installation/4336/2 "2026-08-02T01:34:48Z")

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Maybe try the second example from [the documentation](https://docs.racket-lang.org/lindenmayer/) out?

```scheme
#lang lindenmayer racket
 
## axiom ##
X
 
## rules ##
X -> F[+X]F[-X]+X
F -> FF
 
## variables ##
n=7
θ=20
 
=============================================
(require lindenmayer/turtle)
(provide (all-from-out lindenmayer/turtle) X)
(define (X turtles variables) turtles)

```

It should work after you've run `raco pkg install lindenmayer`.

@shhyou just fixed a bug so you may need to `raco pkg update lindenmayer`.