refine scheme installation instructions

[lambda.git] / how_to_get_the_programming_languages_running_on_your_computer.mdwn

diff --git a/how_to_get_the_programming_languages_running_on_your_computer.mdwn b/how_to_get_the_programming_languages_running_on_your_computer.mdwn
index 8e65a54..235b8ab 100644 (file)
--- a/how_to_get_the_programming_languages_running_on_your_computer.mdwn
+++ b/how_to_get_the_programming_languages_running_on_your_computer.mdwn
@@ -32,7 +32,7 @@ Furthermore, Mac users will be in one of two subgroups:
     There are instructions about how to get Xcode on the [Installing MacPorts](https://www.macports.org/install.php) page.
     Some versions of [Xcode](http://developer.apple.com/xcode.html) are available for free on the Mac App Store.
     Other versions are available through Apple's Developer website (some of these are free, but do require you to
     There are instructions about how to get Xcode on the [Installing MacPorts](https://www.macports.org/install.php) page.
     Some versions of [Xcode](http://developer.apple.com/xcode.html) are available for free on the Mac App Store.
     Other versions are available through Apple's Developer website (some of these are free, but do require you to

-    register with Apple as an "Apple Developer", which involves clicking to accept a legal agreement with Apple.)
+    register with Apple as an "Apple Developer", which involves clicking to accept a legal agreement with Apple).

     I have an older version of this installed. If you download a recent version, email me and let me know how the
     process works so I can tell others.
     <!--
     I have an older version of this installed. If you download a recent version, email me and let me know how the
     process works so I can tell others.
     <!--


@@ -121,7 +121,7 @@ try are
 or [Chibi](https://code.google.com/p/chibi-scheme). The later in that list you go, the more likely it
 is that you'll have to compile the software yourself. (Thus Mac users will need Xcode.)
 
 or [Chibi](https://code.google.com/p/chibi-scheme). The later in that list you go, the more likely it
 is that you'll have to compile the software yourself. (Thus Mac users will need Xcode.)
 

-Racket stands to Scheme in something like the relation Firefox stands to HTML. It's one program among others for working with the language; and many of those programs (or web browsers) permit different extensions, have small variations, and so on.
+Racket stands to Scheme in something like the relation Firefox stands to HTML. It's one program (or platform) among others for working with the Scheme language; and many of those programs (or web browsers) permit different extensions, have small variations, and so on.

 
 Racket has several components. The two most visible components for us are a command-line interpreter named "racket" and a teaching-friendly editor/front-end named "DrRacket". You will probably be working primarily or wholly in the latter.
 <!-- "racket" used to be mzscheme, "DrRacket" used to be DrScheme -->
 
 Racket has several components. The two most visible components for us are a command-line interpreter named "racket" and a teaching-friendly editor/front-end named "DrRacket". You will probably be working primarily or wholly in the latter.
 <!-- "racket" used to be mzscheme, "DrRacket" used to be DrScheme -->


@@ -150,14 +150,21 @@ The current version of Racket is 6.1.1 (released November 2014).
 
          sudo port install mzscheme
 
 
          sudo port install mzscheme
 

+    <!-- mzscheme v4.1.5, from March 2009; latest mzscheme is 4.2.5, from April 2010 -->
+

     If you want the GUI components, I think you'll need to use the
     If you want the GUI components, I think you'll need to use the

-    "Mac/without MacPorts" installation options above.
+    "Mac/without MacPorts" installation options above. Or you could try the Chicken Scheme implementation instead of Racket. This is more current.
+    To do that, type:
+
+        sudo port install chicken readline
+
+    <!-- chicken v4.8.0.2, from Feb 2013; latest available is 4.9.0.1, from Nov 2014 -->

 
 

-    I recommend also typing:
+    Whether you use mzscheme or Chicken, I recommend also typing:

 
         sudo port install rlwrap
 
 
         sudo port install rlwrap
 

-    then if you ever use the command-line program `mzscheme` (or `racket`), you should start it by typing `rlwrap mzscheme`. This gives
+    then if you ever use the command-line program `mzscheme` (or `racket`, for that matter), you should start it by typing `rlwrap mzscheme` (or whatever). This gives

     you a nice history of the commands you've already typed, which you can scroll up and down in with your
     keyboard arrows.
 
     you a nice history of the commands you've already typed, which you can scroll up and down in with your
     keyboard arrows.
 


@@ -177,7 +184,7 @@ The current version of Racket is 6.1.1 (released November 2014).
 
         sudo apt-get rlwrap
 
 
         sudo apt-get rlwrap
 

-    then if you ever use the command-line program `mzscheme` (or `racket`), you should start it by typing `rlwrap mzscheme`. This gives
+    then if you ever use the command-line program `mzscheme` (or `racket`), you should start it by typing `rlwrap mzscheme` (or whatever). This gives

     you a nice history of the commands you've already typed, which you can scroll up and down in with your
     keyboard arrows.
 
     you a nice history of the commands you've already typed, which you can scroll up and down in with your
     keyboard arrows.