[wontfix] choosenim 0.16.0 works but nothing before 0.16.0 works, eg error: "Version 0.15.0 does not exist"

[timotheecour]

choosenim 0.16.0 works but nothing before 0.16.0 works, eg: Version 0.15.0 does not exist

This makes it really hard to find regressions (eg I'm trying to find when iterator composition worked, cf nim-lang/Nim#8188 and https://github.com/def-/nim-iterutils/issues/4)

choosenim 0.15.0

Downloading Nim 0.15.0 from nim-lang.org
[#                                                 ] 0mb 0kb/s
       Tip: 1 messages have been suppressed, use --verbose to show them.
     Error: choosenim.nim(206)       choosenim
        ... choosenim.nim(187)       performAction
        ... choosenim.nim(89)        choose
        ... choosenim.nim(72)        chooseVersion
        ... choosenim.nim(34)        installVersion
        ... download.nim(252)        download
        ... Version 0.15.0 does not exist.

I also tried:
choosenim '#v0.15.0'
(after removing /Users/timothee/.choosenim/downloads/master.tar.gz as a workaround for caching issue I just mentioned in #65, to avoid a potentially wrong cache hit: "Info: /Users/timothee/.choosenim/downloads/master.tar.gz already downloaded")

Downloading Nim v0.15.0 from GitHub
      Info: /Users/timothee/.choosenim/downloads/v0.15.0.tar.gz already downloaded
 Extracting v0.15.0.tar.gz
   Building Nim #v0.15.0
   Warning: Building from latest C sources. They may not be compatible with the Nim version you have chosen to install.
Downloading Nim C sources from GitHub
[##################################################] 100.0% 0kb/s
 Extracting master.tar.gz
   Building C sources
   Building koch
 Exception: choosenim.nim(206)       choosenim
        ... choosenim.nim(187)       performAction
        ... choosenim.nim(89)        choose
        ... choosenim.nim(72)        chooseVersion
        ... choosenim.nim(46)        installVersion
        ... builder.nim(91)          build
        ... builder.nim(43)          buildCompiler
        ... utils.nim(19)            doCmdRaw
        ... Execution failed with exit code 1
        ... Command: ./bin/nim c koch
        ... Output: Hint: used config file '/Users/timothee/.choosenim/toolchains/nim-#v0.15.0/config/nim.cfg' [Conf]
        ... Hint: used config file '/Users/timothee/.config/nim.cfg' [Conf]
        ... Hint: used config file 'koch.nim.cfg' [Conf]
        ... Hint: system [Processing]
        ... lib/system.nim(392, 27) Error: type mismatch: got <type int>
        ... but expected one of:
        ... proc high[T](x: T): T
        ... expression: high(int)
   Cleaning failed build
     Error: choosenim.nim(206)       choosenim
        ... choosenim.nim(187)       performAction
        ... choosenim.nim(89)        choose
        ... choosenim.nim(72)        chooseVersion
        ... choosenim.nim(46)        installVersion
        ... builder.nim(100)         build
        ... Build failed

[timotheecour]

here's my workaround to build 0.9.4 (which I used to show that nim-lang/Nim#8188 was a regression):

git clone -b 'v0.9.4' --single-branch --depth 1 https://github.com/nim-lang/Nim Nim5 && cd Nim5
git clone -b 'v0.9.4' --single-branch --depth 1 https://github.com/nim-lang/csources.git
(cd csources && sh build.sh && cd ..)

./bin/nimrod --version
Nimrod Compiler Version 0.9.4 (2014-04-21) [MacOSX: amd64]
Copyright (c) 2006-2014 by Andreas Rumpf

./koch boot -d:release
=> builds compiler/nimrod

./koch tools # that ones doens't work; probably was introduced later

[genotrance]

Choosenim attempts to detect nimble as part of the install and it isn't included in older versions of the compiler/koch. We could improve that portion of the code but given there's many csources versions missing on github, it might not help as much. (18 nim releases but only 7 csources)

As far as missing csources tags are concerned, I had an idea but it's unclear if it would work. I didn't do any additional work on this since I didn't expect many to want to build such old versions of the compiler.

[timotheecour]

As far as missing csources tags are concerned, I had an idea but it's unclear if it would work. I didn't do any additional work on this since I didn't expect many to want to build such old versions of the compiler.

@genotrance this would be useful to track down regressions and find offending commit via git bisect, which was my original motivation for this bug (to help with nim-lang/Nim#8188 which is an important regression)

[dom96]

I think this is a pretty niche use case, it would be nice if choosenim supported it but I would prefer to omit the additional complexity that would creep in as a result.

[genotrance]

I propose closing this considering choosenim works well for the last 3 years worth of releases.

[timotheecour]

closing as wontfix; we can reopen if need comes up again; biggest use case would be a regression introduced before 0.16.0