The jzignet from greenfork

Add my blog post as guide

While it is not a tutorial on how to use Janet with Zig, it does come with a working repository.

https://www.1a-insec.net/blog/16-buy-janet-get-gc-free/
https://git.envs.net/iacore/janet-zig-test

Maybe you can put this in the project readme?

(sh/exec-slurp) returns nil

I don't understand why this is happening.

here's the program. res is Janet nil.

const std = @import("std");
const janet = @import("janet");

pub fn main() !void {
    try janet.init();
    const env = janet.Environment.coreEnv(null);
    // var env_ = janet.Table.initDynamic(0);
    // env_.proto = core_env.toTable();
    // const env = env_.toEnvironment();
    // janet.gcRoot(env_.wrap()); // this doesn't fix the problem either

    _ = try env.doString("(import spork/sh)", "embed");
    _ = try env.doString(
        \\(pp (sh/exec-slurp "uname"))
    , "embed");
    const res = try env.doString(
        \\(sh/exec-slurp "uname")
    , "embed");
    _ = res;
    @breakpoint();
}

To reproduce this problem:

First clone the repo

git clone https://github.com/iacore/janet-graphical-repl  -b f3ceb4e

here's what I see

user@x17 ~/c/g/janet-graphical-repl (debug)
❯ zig build
user@x17 ~/c/g/janet-graphical-repl (debug)
❯ lldb zig-out/bin/janet-dvui
(lldb) target create "zig-out/bin/janet-dvui"
Current executable set to '/home/user/computing/gui/janet-graphical-repl/zig-out/bin/janet-dvui' (x86_64).
(lldb) r
Process 26114 launched: '/home/user/computing/gui/janet-graphical-repl/zig-out/bin/janet-dvui' (x86_64)
Process 26114 stopped and restarted: thread 1 received signal: SIGCHLD
"Linux"
Process 26114 stopped and restarted: thread 1 received signal: SIGCHLD
Process 26114 stopped
* thread #1, name = 'janet-dvui', stop reason = signal SIGTRAP
    frame #0: 0x000000000027d70e janet-dvui`main.main at main.zig:20:5
   17  	       \\(sh/exec-slurp "uname")
   18  	   , "embed");
   19  	   _ = res;
-> 20  	   @breakpoint();
   21  	}
(lldb) p res
(janet.Janet__union_5967) $0 = (u64 = 18444633011384221697, i64 = -2111062325329919, number = NaN, pointer = 0xfff8800000000001)
(lldb)

0xfff8800000000001 is nil

If you don't believe me you can replace the line \\(sh/exec-slurp "uname") with \\nil.

Tip on @import("../xxx") outside of package path

To import a file outside of package path, create a symlink first, and import that symlink.

Example:

ln -s ../lib/foo lib_foo

_ = @import("lib_foo/build/zig");

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Add my blog post as guide

(sh/exec-slurp) returns nil

Tip on @import("../xxx") outside of package path

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