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* Requirements
- Geiser needs Emacs 24 or better, and at least one of the supported
- scheme implementations:
-
- - Guile 2.2 or better.
- - Chicken 4.8.0 or better.
- - MIT/GNU Scheme 9.1.1 or better.
- - Chibi 0.7.3 or better.
- - Gambit 4.9.3 or better.
- - Racket 6.0 or better.
- - Chez 9.4 or better.
+ Geiser needs Emacs 24 or better, and installing also at least one
+ of the supported scheme implementations.
+
+ The following schemes are supported via an independent package,
+ installable from MELPA:
+
+ - Chez 9.4 or better, via [[https://gitlab.com/emacs-geiser/chez][geiser-chez]]
+ - Chibi 0.7.3 or better, via [[https://gitlab.com/emacs-geiser/chibi][geiser-chibi]]
+ - Chicken 4.8.0 or better, via [[https://gitlab.com/emacs-geiser/chicken][geiser-chicken]]
+ - Gambit 4.9.3 or better, via [[https://gitlab.com/emacs-geiser/gambit][geiser-gambit]]
+ - Gauche 0.9.6 or better, via [[https://gitlab.com/emacs-geiser/gauche][geiser-gauche]]
+ - Guile 2.2 or better, via [[https://gitlab.com/emacs-geiser/guile][geiser-guile]]
+ - Kawa 3.1, via [[https://gitlab.com/emacs-geiser/kawa][geiser-kawa]]
+ - MIT/GNU Scheme, via [[https://gitlab.com/emacs-geiser/mit][geiser-mit]]
+ - Racket 6.0 or better, via [[https://gitlab.com/emacs-geiser/racket][geiser-racket]]
+ - Stklos 1.50, via [[https://gitlab.com/emacs-geiser/stklos][geiser-stklos]]
* Installation
The easiest way is to use MELPA, and just type
- =M-x package-install RET geiser= inside emacs.
- Geiser can be used either directly from its source tree.
+ =M-x package-install RET geiser-<implementation>=
-* Basic configuration
+ inside emacs, or the corresponding =use-package= stanza, for, say
- The loading invocations above install all supported Scheme
- implementations. You can list explicitly the ones that you want by
- setting the variable =geiser-active-implementations= *before* loading
- geiser.el. For instance:
+ #+begin_src emacs-lisp
+ (use-package geiser-mit :ensure t)
+ #+end_src
-#+BEGIN_SRC elisp
- (setq geiser-active-implementations '(chicken guile))
-#+END_SRC
+ All the concrete implementation packages depend on the base =geiser=
+ package, so it'll be installed for you.
- On opening a scheme file, Geiser will try to guess its Scheme,
- defaulting to the first in the list. Use =C-c C-s= to select the
+ Some scheme implementations need additional installation steps to
+ fully support all geiser operations, so please do check their
+ corresponding web pages.
+
+* Basic configuration
+
+ When opening a scheme file, Geiser will try to guess its Scheme,
+ defaulting to the first in the list
+ =geiser-active-implementations=. If you've installed more than one
+ geiser package, you can also use =C-c C-s= to select the
implementation by hand (on a per file basis).
- Check the geiser customization group for some options with:
+ Check the geiser customization group for some other options with:
-#+BEGIN_EXAMPLE
+ #+begin_example
M-x customize-group RET geiser RET
-#+END_EXAMPLE
+ #+end_example
In particular, customize =geiser-<impl>-binary=, which should point
to an executable in your path.
- To start a REPL, =M-x geiser=.
+ To start a REPL, run =M-x geiser=.
** Completion with company-mode
@@ -82,6 +93,12 @@
require company-mode and, from then on, any new scheme buffer or
REPL will use it.
+** Macro expansion with macrostep-geiser
+
+ Geiser offers basic macro expansion in a dedicated buffer. If you
+ prefer in-buffer, step by step expansion, please take a look at
+ Nikita Bloshchanevich's [[https://github.com/nbfalcon/macrostep-geiser][macrostep-geiser]].
+
* Quick key reference
(See also [[file:///home/jao/usr/jao/geiser/web/geiser_5.html#Cheat-sheet][the manual]]'s cheat sheet)