# Cannot Pkg.resolve the new REQUIRE of a package in development

**URL:** <https://discourse.julialang.org/t/cannot-pkg-resolve-the-new-require-of-a-package-in-development/12623>\
**Category:** General Usage\
**Tags:** package\
**Created:** [July 24, 2018, 3:02am UTC](https://discourse.julialang.org/t/cannot-pkg-resolve-the-new-require-of-a-package-in-development/12623 "2018-07-24T03:02:06Z")\
**Posts on this page:** 8\
**Page:** 1

<div class="post-metadata">

**Author:** ![pochoi](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/pochoi/32/3742_2.png) [@pochoi](https://discourse.julialang.org/u/pochoi)\
**Post date:** [July 24, 2018, 3:02am UTC](https://discourse.julialang.org/t/cannot-pkg-resolve-the-new-require-of-a-package-in-development/12623/1 "2018-07-24T03:02:06Z")

</div>

I am developing a forked package, namely `ExpmV`. Recently I created a new branch and add `Compat` in the `REQUIRE`. When I try to load the package in new branch, I got the error

```julia
julia> using ExpmV
ERROR: LoadError: ArgumentError: Package ExpmV does not have Compat in its dependencies:
 - If you have ExpmV checked out for development and have
   added Compat as a dependency but haven't updated your primary
   environment's manifest file, try `Pkg.resolve()`.
 - Otherwise you may need to report an issue with ExpmV.

Stacktrace:
 [1] require(::Module, ::Symbol) at ./loading.jl:821
 [2] include at ./boot.jl:317 [inlined]
 [3] include_relative(::Module, ::String) at ./loading.jl:1034
 [4] macro expansion at ./logging.jl:312 [inlined]
 [5] _require(::Base.PkgId) at ./loading.jl:929
 [6] require(::Base.PkgId) at ./loading.jl:838
 [7] require(::Module, ::Symbol) at ./loading.jl:833
in expression starting at /Users/po/.julia/packages/ExpmV/zrJj/src/ExpmV.jl:3

```

Following the error message, I run `Pkg.resolve()`

```julia
(v0.7) pkg> resolve
 Resolving package versions...
  Updating `~/.julia/environments/v0.7/Project.toml`
 [no changes]
  Updating `~/.julia/environments/v0.7/Manifest.toml`
 [no changes]

```

However, I still couldn’t load the package. I restart julia and run `using ExpmV` again, I keep getting the same error before

```julia
ERROR: LoadError: ArgumentError: Package ExpmV does not have Compat in its dependencies:
......

```

Any help I would be appreciate!

---

<div class="post-metadata">

**Author:** ![kristoffer.carlsson](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/kristoffer.carlsson/32/22_2.png) [@kristoffer.carlsson](https://discourse.julialang.org/u/kristoffer.carlsson)\
**Post date:** [July 24, 2018, 7:01am UTC](https://discourse.julialang.org/t/cannot-pkg-resolve-the-new-require-of-a-package-in-development/12623/2 "2018-07-24T07:01:42Z")

</div>

Can you link the branch where this is happening?

---

<div class="post-metadata">

**Author:** ![pochoi](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/pochoi/32/3742_2.png) [@pochoi](https://discourse.julialang.org/u/pochoi)\
**Post date:** [July 24, 2018, 7:50am UTC](https://discourse.julialang.org/t/cannot-pkg-resolve-the-new-require-of-a-package-in-development/12623/3 "2018-07-24T07:50:34Z")

</div>

[https://github.com/pochoi/ExpmV.jl/tree/compat](https://github.com/pochoi/ExpmV.jl/tree/compat)

```julia
julia> versioninfo()
Julia Version 0.7.0-beta2.0
Commit b145832402* (2018-07-13 19:54 UTC)
Platform Info:
  OS: macOS (x86_64-apple-darwin14.5.0)
  CPU: Intel(R) Core(TM) i5-4258U CPU @ 2.40GHz
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-6.0.0 (ORCJIT, haswell)
Environment:
  JULIA_EDITOR = atom

```

Thanks a lot!

---

<div class="post-metadata">

**Author:** ![kristoffer.carlsson](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/kristoffer.carlsson/32/22_2.png) [@kristoffer.carlsson](https://discourse.julialang.org/u/kristoffer.carlsson)\
**Post date:** [July 24, 2018, 9:26am UTC](https://discourse.julialang.org/t/cannot-pkg-resolve-the-new-require-of-a-package-in-development/12623/4 "2018-07-24T09:26:28Z")

</div>

If you have a Project file, that is the one that counts so you would need Compat in `Project.toml`.

---

<div class="post-metadata">

**Author:** ![pochoi](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/pochoi/32/3742_2.png) [@pochoi](https://discourse.julialang.org/u/pochoi)\
**Post date:** [July 25, 2018, 11:01am UTC](https://discourse.julialang.org/t/cannot-pkg-resolve-the-new-require-of-a-package-in-development/12623/5 "2018-07-25T11:01:08Z")

</div>

Thanks a lot. I didn’t realize the error is from `Project.toml`.

Btw, is `Manifest.toml` a must? Not sure how to generate it, and I see some packages doesn’t have it.

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<div class="post-metadata">

**Author:** ![kristoffer.carlsson](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/kristoffer.carlsson/32/22_2.png) [@kristoffer.carlsson](https://discourse.julialang.org/u/kristoffer.carlsson)\
**Post date:** [July 25, 2018, 11:02am UTC](https://discourse.julialang.org/t/cannot-pkg-resolve-the-new-require-of-a-package-in-development/12623/6 "2018-07-25T11:02:59Z")

</div>

The manifest is automatically generated during the usage of the package manager. It contains the exact versions/git-tree-shas/paths that julia uses to find what packages to load.

For most libraries it does not need to be checked into version control. See also [Does Manifest.toml belong in the repository?](https://discourse.julialang.org/t/does-manifest-toml-belong-in-the-repository/12029)

---

<div class="post-metadata">

**Author:** ![kw\_martin](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/kw_martin/32/48868_2.png) [@kw\_martin](https://discourse.julialang.org/u/kw_martin)\
**Post date:** [March 21, 2020, 3:30pm UTC](https://discourse.julialang.org/t/cannot-pkg-resolve-the-new-require-of-a-package-in-development/12623/7 "2020-03-21T15:30:48Z")

</div>

kristoffer, I have the same issue

```julia
julia> using Filt
[Info: Precompiling Filt [ed5e094f-ca7f-43de-b0a0-a977aa9a3271]
┌ Warning: Package Filt does not have MAT in its dependencies:
│ - If you have Filt checked out for development and have
│ added MAT as a dependency but haven't updated your primary
│ environment's manifest file, try `Pkg.resolve()`.
│ - Otherwise you may need to report an issue with Filt
└ Loading MAT into Filt from project dependency, future warnings for Filt are suppressed.

```

My Project.toml file is

```julia
name = "Filt"
uuid = "ed5e094f-ca7f-43de-b0a0-a977aa9a3271"
authors = ["Kenneth Martin <martin@granitesemi.com>"]
version = "0.1.0"

[compat]
julia = "1"

[extras]
Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"

[targets]
test = ["Test"]

```

From the Pkg.jl documentation it appears I need something like

```julia
[deps]
Example = "7876af07-990d-54b4-ab0e-23690620f79a"
Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"

```

for MAT, but the documentation seems to indicate this should be done automatically or by using ]resolve which didn’t work. Do I need to find the name-uuid pair for MAT and manually add it using an editor?

---

<div class="post-metadata">

**Author:** ![kristoffer.carlsson](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/kristoffer.carlsson/32/22_2.png) [@kristoffer.carlsson](https://discourse.julialang.org/u/kristoffer.carlsson)\
**Post date:** [March 29, 2020, 10:30am UTC](https://discourse.julialang.org/t/cannot-pkg-resolve-the-new-require-of-a-package-in-development/12623/8 "2020-03-29T10:30:08Z")

</div>

You need to add `MAT` to the Project.toml for Filt.

> [@kw\_martin](#):
>
> Do I need to find the name-uuid pair for MAT and manually add it using an editor?

No, you can just activate the Filt project and then use Pkg to add it with `Pkg.add("MAT")` which will update the Project.