a954bd8d5e
Adds a Nix function to build a Lisp library out of a specified set of Nix files. All files are combined into a single FASL. This is by design only compatible with SBCL (for now).
76 lines
2.5 KiB
Nix
76 lines
2.5 KiB
Nix
# buildLisp provides Nix functions to build Common Lisp packages,
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# targeting SBCL.
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#
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# buildLisp is designed to enforce conventions and do away with the
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# free-for-all of existing Lisp build systems.
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{ pkgs ? { third_party = import <nixpkgs> {}; }
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, ... }:
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let
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inherit (builtins) map elemAt match;
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inherit (pkgs.third_party) lib runCommand writeText sbcl;
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#
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# Internal helper definitions
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#
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# 'genCompileLisp' generates a Lisp file that instructs SBCL to
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# compile the provided list of Lisp source files to $out.
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genCompileLisp = srcs: writeText "compile.lisp" ''
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;; This file compiles the specified sources into the Nix build
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;; directory, creating one FASL file for each source.
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(require 'sb-posix)
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(defun nix-compile-lisp (srcfile)
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(let ((outfile (make-pathname :type "fasl"
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:directory (or (sb-posix:getenv "NIX_BUILD_TOP")
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(error "not running in a Nix build"))
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:defaults srcfile)))
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(compile-file srcfile :output-file outfile)))
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(let ((*compile-verbose* t)
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;; FASL files are compiled into the working directory of the
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;; build and *then* moved to the correct out location.
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(pwd (sb-posix:getcwd)))
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;; These forms were inserted by the Nix build:
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${
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lib.concatStringsSep "\n" (map (src: "(nix-compile-lisp \"${src}\")") srcs)
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}
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)
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'';
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#
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# Public API functions
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#
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# Add an `overrideLisp` attribute to a function result that works
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# similar to `overrideAttrs`, but is used specifically for the
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# arguments passed to Lisp builders.
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makeOverridable = f: orig: (f orig) // {
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overrideLisp = new: makeOverridable f (orig // (new orig));
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};
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# 'library' builds a list of Common Lisp files into a single FASL
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# which can then be loaded into SBCL.
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library = { name, srcs, deps ? [] }: runCommand "${name}-cllib" {} ''
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${sbcl}/bin/sbcl --script ${genCompileLisp srcs}
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# FASL files can be combined by simply concatenating them together:
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mkdir $out
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cat ./*.fasl > $out/${name}.fasl
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'';
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# 'program' creates an executable containing a dumped image of the
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# specified sources and dependencies.
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program = {};
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# 'sbclWith' creates an image with the specified libraries /
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# programs loaded.
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sbclWith = {};
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in {
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library = makeOverridable library;
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program = makeOverridable program;
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sbclWith = makeOverridable sbclWith;
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}
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