add piston nix pkg for brainfuck

packages/brainfuck/2.7.3/build.sh

@@ -1,22 +0,0 @@
-#!/usr/bin/env bash
-
-# Put instructions to build your package in here
-PREFIX=$(realpath $(dirname $0))
-
-git clone https://github.com/fabianishere/brainfuck.git
-
-cd brainfuck
-git checkout 06f84462e0a96487670a4b8024e3ec531e0377ee
-
-
-mkdir -p build
-
-cd build
-
-cmake .. -DCMAKE_INSTALL_PREFIX=$PREFIX/ -DENABLE_EDITLINE=OFF
-
-make -j$(nproc)
-make install -j$(nproc)
-
-cd ../../
-rm -rf brainfuck

packages/brainfuck/2.7.3/environment

@@ -1,4 +0,0 @@
-#!/usr/bin/env bash
-
-# Put 'export' statements here for environment variables
-export PATH=$PWD/bin:$PATH

packages/brainfuck/2.7.3/metadata.json

@@ -1,5 +0,0 @@
-{
-    "language": "brainfuck",
-    "version": "2.7.3",
-    "aliases": ["bf"]
-}

packages/brainfuck/2.7.3/run

@@ -1,4 +0,0 @@
-#!/usr/bin/env bash
-
-# Put instructions to run the runtime
-fold -w1 | brainfuck $1

packages/brainfuck/2.7.3/test.bf

@@ -1 +0,0 @@
--[--->+<]>------.----.

runtimes/brainfuck.nix

@@ -0,0 +1,55 @@
+{pkgs, piston, ...}:
+let
+    # All other BF packages are either marked as broken in nix-pkgs
+    # or have missing functionality. Yabi isn't perfect either.
+    pkg = pkgs.haskellPackages.yabi;
+in piston.mkRuntime {
+    language = "brainfuck";
+    version = pkg.version;
+
+    aliases = [
+        "bf"
+        "yabi"
+    ];
+
+    run = ''
+        # Yabi produces messages when parsing the BF file that are sent to stderr
+        # Yabi will also break when trying to take more input at EOF
+        ${pkg}/bin/yabi "$1" 2> /dev/null
+    '';
+
+    tests = [
+        # stdout test
+        (piston.mkTest {
+            files = {
+                "test.bf" = ''-[--->+<]>------.----.'';
+            };
+            args = [];
+            stdin = "";
+            packages = [];
+            main = "test.bf";
+        })
+
+        # stdin test
+        (piston.mkTest {
+            files = {
+                "test.bf" = '',.,.'';
+            };
+            args = [];
+            stdin = "OK";
+            packages = [];
+            main = "test.bf";
+        })
+
+        # bf doesn't take args test
+        (piston.mkTest {
+            files = {
+                "test.bf" = ''-[--->+<]>------.----.'';
+            };
+            args = ["OK"];
+            stdin = "";
+            packages = [];
+            main = "test.bf";
+        })
+    ];
+}

runtimes/default.nix

@@ -58,4 +58,5 @@ args: {
     "dotnet-sdk-fsharp-interactive" = import ./dotnet-sdk-fsharp-interactive.nix args;
     "dotnet-sdk-visual-basic" = import ./dotnet-sdk-visual-basic.nix args;
     "fpc-pascal" = import ./fpc-pascal.nix args;
+    "brainfuck" = import ./brainfuck.nix args;
 }