About Package installation

New to Julia
,
1

I am using NLOptControl for my simulation. Why can’t i install it through Pkg.add(), and I can install it by using Pkg.add(PackageSpec(url=“”)) but i still can’t use the package by typing using NLOptControl, it said that there’s extra token OCP and faiked to precompile

2

Can you please post the actual code you ran and the full error message? Without at least that information there’s almost nothing we can do to help you.

3 
(v1) pkg> add NLOptControl
 Resolving package versions...
ERROR: Unsatisfiable requirements detected for package NLOptControl [290757bd]:
 NLOptControl [290757bd] log:
 ├─possible versions are: 0.1.2-0.1.6 or uninstalled
 ├─restricted to versions * by an explicit requirement, leaving only versions 0.1.2-0.1.6
 └─restricted by julia compatibility requirements to versions: uninstalled — no versions left

The restricted by julia compatibility requirements to versions: uninstalled — no versions left part means that the package does not support Julia v1.

2 Likes
4

I have tried to use julia 0.7.0. I can install the package now, but when I typed using NLOptControl
LoadError: Failed to precompile NLOptControl [290757bd-39a7-5095-97bb-ca0f46959724] to C:\Users\微星.julia\compiled\v0.7\NLOptControl\Ua2jx.ji.

in expression starting at C:\Users\微星\Desktop\UM_WINTER\julia\YSY\compiler.jl:1

macro expansion at logging.jl:313 [inlined]

compilecache(::Base.PkgId, ::String) at loading.jl:1185

macro expansion at logging.jl:311 [inlined]

_require(::Base.PkgId) at loading.jl:941

require(::Base.PkgId) at loading.jl:852

macro expansion at logging.jl:311 [inlined]

require(::Module, ::Symbol) at loading.jl:834

5

Yes . That is the exact problem i am having! Is there any way to fix it ?

6

So I might use julia0.7.0?

7

Sorry @johnysy — I approved those posts in the wrong order. Now that you’ve posted more than twice you won’t hit the moderation queue anymore.