2/17/2023 0 Comments Best emacs for mac![]() On Windows 10, type env in the search box in the task bar and open the program to Edit the system environment variables. If you can't import the library, look at the library call at the top of lists.sls, for example, because that will give you a clue of where the library expects to be placed in library-directories. If we have a library at /Users/username/scheme/lib/srfi/s1/lists.sls, then we import the library with (import (srfi s1 lists)), i.e., you pass the components of the path to import. Now, from a Chez REPL, we can see the effect of our changes. bash_profile, enter the following command in the Terminal. Remove the : to replace the default values with the new entries. The : at the end is used to indicate that the new entries should be appended to the existing entries. export CHEZSCHEMELIBDIRS="/Users/username/scheme/lib:" These lines add a new directory to library-directories and a new extension to library-extensions. bash_profile to add information on library directories and extensions. These are the file extensions that Chez uses when searching the library directories. For a 'global' approach, I created a library directory at /Users/username/scheme/lib on macOS, and at C:\scheme\lib on Windows.īefore we go over where to stash that directory information, let's cover library extensions. If you are using a project-based workflow, then you could include your dependencies in the current directory, perhaps in a lib folder. The "." indicates that Chez is looking in the current directory. Library-directories returns the directories where Chez looks for libraries. In this post, though, I will describe manual package management. Library DirectoryĬhez does not come with a package manager, but there are 3rd-party options, e.g., Akku. In the middle of an expression, RET creates a new line to enter an expression from the middle of an expression, use CTRL J. To see (and edit) all lines, type CTRL L. When navigating through previous expressions, only the first line of a multi-line expression is shown. Autocomplete functions and paths with TAB.Navigate through previous expressions with the up and down arrow keys.The REPL has several nice features including: Open any of those programs to get a Chez REPL. On Windows, four Chez programs were installed (32- or 64-bit threaded and unthreaded). To launch the Chez REPL on macOS, open Terminal and type chez. Nothing tricky about installing Chez Scheme. On Windows, I used the Windows installer. On macOS, I installed Chez with Homebrew. I will update the post as I become more experienced with Chez and Emacs. Disclaimer: The suggestions in this post may not represent best practice. Setting up a development environment for Chez requires jumping through a few more hoops. ![]() ![]() One of the reasons that I chose Racket was because of how easy it is to get up and running. I recently decided to switch my attention from learning Racket to Chez Scheme.
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