modify setup instrcution for adjusting almond environment

[diningyo]

When I tried to set up Chisel Bootcamp environment, jupyter-scala setup was changed:

• jupyter-scala github URL changed and redirecting to https://github.com/almond-sh/almond.git
• the module name was change to almond from jupyter-scala (maybe)
• almond setup method is changed to use coursier.

So, I changed README.md to match current setup instructions.

[diningyo]

I realized making a mistake that almond setup instruction order.
So I modified setup instruction again in da5ea3a.

[grebe]

Thank you for noticing this! I think it looks pretty good to me, I think we should have a couple people with different systems test it out. @chick @edwardcwang @azidar

[edwardcwang]

I'll take a look.

[edwardcwang]

Works fine for me (Ubuntu 18.10)

[diningyo]

Thank you for checking my pull request and modifying a mistake.

[edwardcwang]

Hmm, does this change the Scala version? Seems like there are some errors that might be related to structural typing:

cmd5.sc:12: value out is not a member of chisel3.Bundle
  io.out := io.in
     ^cmd5.sc:12: value in is not a member of chisel3.Bundle
  io.out := io.in
               ^Compilation Failed

(This is a fresh test on Mac OS X, Java 8)

[edwardcwang]

Needs an -Xsource=2.11 flag

[edwardcwang]

Sorry, I believe that I may have spoken too quickly. The install instructions work fine but since it defaults to Scala 2.12, structural types (used e.g. in IOs) is broken, so we need a way to pass a -Xsource=2.11 flag to the Scala compiler to make it work.

(The error is also reproducible on Ubuntu 18.10)

[diningyo]

Thanks your reporting that failed compilation. You are right and that problem is occurred on my environment:

• Ubuntu 16.04 LTS
• scala 2.12.7
• almond 0.1.9

Sorry for no checking to run chisel basic code, because I've just started to learn Chisel.
Anyway I'll check up your advice which add an -Xsource=2.11 flags and try it.

[diningyo]

In edwardcwang's advise, I changed Scala version to build almond in d4868c8.
The points are as follows:

• When cloning almond github, indicating v0.1.9 version tag (for matching almond version obviously)
• The Scala version for building almond is changed from 2.12.7 to 2.11.12.

And I can run Chisel's code io.out := io.in in module2.

Could you check it again?

[edwardcwang]

Thanks for being responsive and helping to fix the PR!

I'll take a look at it within the next few days. Was there not a way to get it to build with 2.12? For the Chisel builds we do with sbt we are able to use 2.12 with the -Xsource=2.11 flag.

[diningyo]

Thanks for replying my comment.

At first, I tried to use -Xsource=2.11 flag, so I edited almond's build.sbt file and rebuilt it.
Added option is below.

scalacOptions ++= Seq(
  "-Xsource=2.11",
)

But it didn't work for me.
Is that trial wrong ?

After that trial, I checked .travis.yml file and found scala: 2.11.12 at include section.
So I changed SCALA_VERSION setting. And this time, it works for me.

[edwardcwang]

I think is is fine now. Filed #45 to get it working with 2.12+ eventually

[diningyo]

Thnaks for merging the PR.
I understand your comment for future plan #45 .
If I found the resoultion, I would create PR.