Why is there an extra _3 in download url when importing?

[Maxpicca-Li]

OS: MacOS

My tag is set chisel3_2.13 but I get the chisel3_2.13_3 in the url. That is to say, the download url has the _3 with tag. Then, it is not found. I aslo test scalatags and it also has scalatags_3. However it not what I want.

~ amm
Loading...
Welcome to the Ammonite Repl 3.0.2 (Scala 3.3.5 Java 23.0.2)
@ import $ivy.`com.lihaoyi::scalatags:0.11.0`
https://repo1.maven.org/maven2/com/lihaoyi/scalatags_3/0.11.0/scalatags_3-0.11.0.pom
  100.0% [##########] 1.4 KiB (4.0 KiB / s)
import $ivy.$

@ import $ivy.`edu.berkeley.cs::chisel3_2.13:3.6.0`
Failed to resolve ivy dependencies:Error downloading edu.berkeley.cs:chisel3_2.13_3:3.6.0
  not found: /Users/xxx/.ivy2/local/edu.berkeley.cs/chisel3_2.13_3/3.6.0/ivys/ivy.xml
  not found: https://repo1.maven.org/maven2/edu/berkeley/cs/chisel3_2.13_3/3.6.0/chisel3_2.13_3-3.6.0.pom

[lefou]

The _3 and _2.13 suffixes denote the Scala binary platform. (Those were historically not compatible, but _3 and _2.13 are compatible.) If you use the <group>::<artifact>:<version> notation with two colons (::) between group and artifact, this suffix is managed for you. If you use a single colon, you can and need to manage it yourself: <group>:<artifact>:<version>.

This should fix your issue:

-@ import $ivy.`edu.berkeley.cs::chisel3_2.13:3.6.0`
+@ import $ivy.`edu.berkeley.cs:chisel3_2.13:3.6.0`

If there is also a chisel3_3 version (maybe in the future?), you could instead use:

-@ import $ivy.`edu.berkeley.cs::chisel3_2.13:3.6.0`
+@ import $ivy.`edu.berkeley.cs::chisel3:3.6.0`

[Maxpicca-Li]

Thank you so much! It's helpful for me!