contents changed in original source code when running now dev

[mike-engel]

Note: This was transferred from the official now-builders repo.

Not sure if I should post this here or in now-cli repo, but here it is:

When running now dev with @now/rust builder using index.rs entry point, it keeps changing the content of Cargo.toml and index.rs

Changes in Cargo.toml

[[bin]]
name = "index"
-path = "index.rs"
+path = "/Users/fatih/dev/paper/services/embed/github/index.rs"

Changes in index.rs

+use now_lambda::lambda;
+use std::error::Error;

// my handler code here

+fn main() -> Result<(), Box<dyn Error>> {
+    Ok(lambda!(handler))
+}

The problem is I'm not supposed to commit this changes, and I think this change should only be applied in private copy (somewhere in /var/private?).

Another problem is when running now dev again, it will add another template over and over again, it's possible that I get something like this

+use now_lambda::lambda;
+use std::error::Error;

+use now_lambda::lambda;
+use std::error::Error;

+use now_lambda::lambda;
+use std::error::Error;

// my handler code here

+fn main() -> Result<(), Box<dyn Error>> {
+    Ok(lambda!(handler))
+}

+fn main() -> Result<(), Box<dyn Error>> {
+    Ok(lambda!(handler))
+}


+fn main() -> Result<(), Box<dyn Error>> {
+    Ok(lambda!(handler))
+}

My config

now.json

{
  "builders": [
    {
      "src": "services/embed/**/index.rs",
      "use": "@now/rust@canary"
    },
  ]
}

Version

❯ now --version
15.4.0
❯ uname -a
Darwin TVLK-FatihKalifa.local 18.6.0 Darwin Kernel Version 18.6.0: Thu Apr 25 23:16:27 PDT 2019; root:xnu-4903.261.4~2/RELEASE_X86_64 x86_64
❯ cargo --version
cargo 1.35.0 (6f3e9c367 2019-04-04)

[cbrevik]

Is there any way to get around this? Been trying to use now-rust, but this (and a few other bugs) make it a bit difficult.

[mike-engel]

@cbrevik unfortunately I'm still working on #1 as I get time. If you'd like to help, let me know

Also, can you file issues for the other bugs?

[cbrevik]

Sure @mike-engel, let me look it over later to see if I can help.

The main one I had trouble with was using now-cli@16.1.1 with now-rust, I can submit an issue with reproduction for that.

[cbrevik]

I was looking at the PR earlier thinking of helping out. Tried cloning this project and referencing/debugging it from an adjacent test project, but I am having some issues. Do you know if there is any documentation/guides on developing/debugging now-builders locally?

[mike-engel]

@cbrevik No, unfortunately not 😞 The best I can think of right now is an npm link or npm install ../path/to/fork. I haven't personally had too much luck with those, but you may try browsing spectrum or looking through the issues on now. Sorry I can't be too much help right now. I'm preparing to move a long distance, but afterward can help more 😄