"panic: version queue is empty, should not happen" while trying to use "develop" branch of "github.com/gin-gonic/gin"

[andreynering]

What version of Go (go version) and dep (git describe --tags) are you using?

$ go version
go version go1.8 windows/386

$ git describe --tags
v0.1.0-175-gc79b048

Description

I first run dep init -v. Here the files:

• Gopkg.toml
• Gopkg.lock
• Output of dep init -v

Dep automatically choose the default branch of Gin project (master), but I need develop. So I changed Gopkg.toml from:

[[constraint]]
  name = "github.com/gin-gonic/gin"
  version = "1.1.4"

To:

[[constraint]]
  branch = "develop"
  name = "github.com/gin-gonic/gin"

Then I runned dep ensure and got the panic.

• Output of dep ensure -v

[carolynvs]

Seems like the root problem is that https://github.com/gin-contrib/sse doesn't have any tags or branches with version names. dep isn't handling gopkg.in's Version Zero correctly, which should resolve to the default branch.

[carolynvs]

I'm going to work on this (and #777) as they are both related to how we sort/resolve gopkg.in versions.

[ibrasho]

@carolynvs Is this resolved by #1053?

[carolynvs]

Nice catch, yes it has! dep now picks the default branch instead of panicing:

(44)  ? attempt github.com/gin-contrib/sse with 1 pkgs; 1 versions to try
(47)      try github.com/gin-contrib/sse@master
(47)  ✓ select github.com/gin-contrib/sse@master w/1 pkgs

[sdboyer]

phew, I saw this come up in my notifications and thought we had a regression 😅

[carolynvs]

I screwed up validating this was fixed (I used github.com instead of gopkg.in in the import path). Reopening...

[bennyscetbun]

hi there,
any eta fixing the issue?