83 lines
2.5 KiB
Nix
83 lines
2.5 KiB
Nix
# Lambda Lisp has several backends, here we are using
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# the blc one. Ideally, this should be made into several
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# packages such as lambda-lisp-blc, lambda-lisp-lazyk,
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# lambda-lisp-clamb, etc.
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{
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lib,
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gccStdenv,
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fetchFromGitHub,
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fetchurl,
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runtimeShell,
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}:
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let
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stdenv = gccStdenv;
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s = import ./sources.nix { inherit fetchurl fetchFromGitHub; };
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in
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stdenv.mkDerivation rec {
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pname = "lambda-lisp-blc";
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version = s.lambdaLispVersion;
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src = s.src;
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flatSrc = s.flatSrc;
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blcSrc = s.blcSrc;
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installPhase = ''
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runHook preInstall
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mkdir -p ./build
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cp $blcSrc ./build/Blc.S
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cp $flatSrc ./build/flat.lds
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cd build;
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cat Blc.S | sed -e 's/#define.*TERMS.*//' > Blc.ext.S;
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$CC -c -DTERMS=50000000 -o Blc.o Blc.ext.S
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ld.bfd -o Blc Blc.o -T flat.lds
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cd ..;
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mv build/Blc ./bin
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install -D -t $out/bin bin/Blc
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install -D -t $out/lib bin/lambdalisp.blc
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cd build;
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$CC ../tools/asc2bin.c -O2 -o asc2bin;
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cd ..;
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mv build/asc2bin ./bin;
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chmod 755 ./bin/asc2bin;
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install -D -t $out/bin bin/asc2bin
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echo -e "#!${runtimeShell}\n( cat $out/lib/lambdalisp.blc | $out/bin/asc2bin; cat ) | $out/bin/Blc" > lambda-lisp-blc
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chmod +x lambda-lisp-blc
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install -D -t $out/bin lambda-lisp-blc
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runHook postInstall
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'';
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doInstallCheck = true;
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installCheckPhase = ''
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runHook preInstallCheck
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a=$(echo "(* (+ 1 2 3 4 5 6 7 8 9 10) 12020569 (- 2 5))" | $out/bin/lambda-lisp-blc | tr -d "> ");
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test $a == -1983393885
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runHook postInstallCheck
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'';
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meta = with lib; {
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description = "Lisp interpreter written in untyped lambda calculus";
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homepage = "https://github.com/woodrush/lambdalisp";
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longDescription = ''
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LambdaLisp is a Lisp interpreter written as a closed untyped lambda calculus term.
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It is written as a lambda calculus term LambdaLisp = λx. ... which takes a string
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x as an input and returns a string as an output. The input x is the Lisp program
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and the user's standard input, and the output is the standard output. Characters
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are encoded into lambda term representations of natural numbers using the Church
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encoding, and strings are encoded as a list of characters with lists expressed as
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lambdas in the Mogensen-Scott encoding, so the entire computation process solely
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consists of the beta-reduction of lambda terms, without introducing any
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non-lambda-type object.
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'';
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license = licenses.mit;
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maintainers = with maintainers; [ cafkafk ];
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platforms = [ "x86_64-linux" ];
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};
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}
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