Julia unusable because of Grisu dependency - package

Question

I just installed the latest fresh Julia (1.7.3). Afterwards I installed some packages for optimization.
Inbetween Julia started to report an unresolvable dependency on package Grisu. Now a lot of the installed packaged don't work:
ERROR: LoadError: UndefVarError: Grisu not defined
What problem is this with Julia? Do I need to un- and reinstall the entire Julia system or is there a workaround for this? I don't need Grisu but packages that depend on Grisu.
I also tried to remove the packages that don't compile (to reinstall afterwards), e.g.
julia> Pkg.rm("JuMP")
ERROR: The following package names could not be resolved:
* JuMP (4076af6c-e467-56ae-b986-b466b2749572 in manifest but not in project)
but after
julia> Pkg.precompile()
I get
julia> Pkg.precompile()
Precompiling project...
✗ Interpolations
✗ JuMP
✗ Alpine
✗ JuMPeR
✗ Pajarito
✗ MultiJuMP
✗ NLOptControl
so the package JuMP (e.g.) is still there and failes to compile.
What is wrong here?
EDIT:
julia> Pkg.build()
Building GR ───────→ `C:\Users\Michael\.julia\scratchspaces\44cfe95a-1eb2-52ea-b672-e2afdf69b78f\7ea6f715b7caa10d7ee16f1cfcd12f3ccc74116a\build.log`
Building Conda ────→ `C:\Users\Michael\.julia\scratchspaces\44cfe95a-1eb2-52ea-b672-e2afdf69b78f\6e47d11ea2776bc5627421d59cdcc1296c058071\build.log`
Building IJulia ───→ `C:\Users\Michael\.julia\scratchspaces\44cfe95a-1eb2-52ea-b672-e2afdf69b78f\98ab633acb0fe071b671f6c1785c46cd70bb86bd\build.log`
Building OptimPack → `C:\Users\Michael\.julia\scratchspaces\44cfe95a-1eb2-52ea-b672-e2afdf69b78f\6c8a57b7abf98250755764fe49138781c09d6826\build.log`
Building Plots ────→ `C:\Users\Michael\.julia\scratchspaces\44cfe95a-1eb2-52ea-b672-e2afdf69b78f\f226ff9b8e391f6a10891563c370aae8beb5d792\build.log`
Precompiling project...
✗ NLOptControl
1 dependency successfully precompiled in 35 seconds (224 already precompiled, 5 skipped during auto due to previous errors)
1 dependency errored. To see a full report either run `import Pkg; Pkg.precompile()` or load the package
julia> import Pkg; Pkg.precompile()
Precompiling project...
✗ JuMP
✗ Alpine
✗ JuMPeR
✗ Pajarito
✗ MultiJuMP
✗ NLOptControl
0 dependencies successfully precompiled in 11 seconds (225 already precompiled)
ERROR: The following 5 direct dependencies failed to precompile:
Pajarito [2f354839-79df-5901-9f0a-cdb2aac6fe30]
Failed to precompile Pajarito [2f354839-79df-5901-9f0a-cdb2aac6fe30] to C:\Users\Michael\.julia\compiled\v1.7\Pajarito\jl_3088.tmp.
ERROR: LoadError: UndefVarError: Grisu not defined
Stacktrace:
[1] getproperty(x::Module, f::Symbol)
# Base .\Base.jl:35
[2] top-level scope
# C:\Users\Michael\.julia\packages\JuMP\I7whV\src\writers.jl:6
[3] include(mod::Module, _path::String)
# Base .\Base.jl:418
[4] include(x::String)
# JuMP C:\Users\Michael\.julia\packages\JuMP\I7whV\src\JuMP.jl:11
[5] top-level scope
# C:\Users\Michael\.julia\packages\JuMP\I7whV\src\JuMP.jl:947
[6] include
# .\Base.jl:418 [inlined]
[7] include_package_for_output(pkg::Base.PkgId, input::String, depot_path::Vector{String}, dl_load_path::Vector{String}, load_path::Vector{String}, concrete_deps::Vector{Pair{Base.PkgId, UInt64}}, source::String)
# Base .\loading.jl:1318
[8] top-level scope
# none:1
[9] eval
# .\boot.jl:373 [inlined]
[10] eval(x::Expr)
# Base.MainInclude .\client.jl:453
[11] top-level scope
# none:1
in expression starting at C:\Users\Michael\.julia\packages\JuMP\I7whV\src\writers.jl:5
in expression starting at C:\Users\Michael\.julia\packages\JuMP\I7whV\src\JuMP.jl:11
EDIT 2:
After removing .julia and reinstalling JuMPeR and MultiJuMP the same happend. The later caused the following:
Updating `C:\Users\Michael\.julia\environments\v1.7\Project.toml`
[07493b3f] ↓ Alpine v0.4.1 ⇒ v0.1.15
[4076af6c] ↓ JuMP v1.1.1 ⇒ v0.18.6
[f6097e2c] + MultiJuMP v0.5.0
[2f354839] ↓ Pajarito v0.8.0 ⇒ v0.7.0
Updating `C:\Users\Michael\.julia\environments\v1.7\Manifest.toml`
[07493b3f] ↓ Alpine v0.4.1 ⇒ v0.1.15
[6e4b80f9] - BenchmarkTools v1.3.1
[523fee87] - CodecBzip2 v0.7.2
[944b1d66] - CodecZlib v0.7.0
[861a8166] + Combinatorics v0.7.0
[34da2185] ↓ Compat v4.1.0 ⇒ v2.2.1
[e95a7839] + ConicBenchmarkUtilities v0.4.0
[864edb3b] ↓ DataStructures v0.18.13 ⇒ v0.17.20
[92fee26a] + GZip v0.5.1
[682c06a0] - JSON v0.21.3
[4076af6c] ↓ JuMP v1.1.1 ⇒ v0.18.6
[b964fa9f] + LaTeXStrings v1.3.0
[b8f27783] - MathOptInterface v1.6.0
[fdba3010] + MathProgBase v0.7.8
[f6097e2c] + MultiJuMP v0.5.0
[d8a4904e] - MutableArithmetics v1.0.4
[77ba4419] ↓ NaNMath v1.0.1 ⇒ v0.3.7
[2f354839] ↓ Pajarito v0.8.0 ⇒ v0.7.0
[69de0a69] - Parsers v2.3.2
[f27b6e38] + Polynomials v0.6.1
[3cdcf5f2] + RecipesBase v0.8.0
[89212889] + ReverseDiffSparse v0.8.6
[3bb67fe8] - TranscodingStreams v0.9.6
[6e34b625] - Bzip2_jll v1.0.8+0
[8bb1440f] + DelimitedFiles
[8ba89e20] + Distributed
[9abbd945] - Profile
[1a1011a3] + SharedArrays
Precompiling project...
✗ JuMP
✗ Alpine
✗ Pajarito
✗ MultiJuMP
Afterwards it is not possible to repair the packages, even by uninstalling the problematic packages.

Answer 1

The Grisu.jl package has no specific dependencies so there is rather no way how you could have some problems with it.
What usually helps is rebuilding the packages:
using Pkg
Pkg.build()
In most cases that will align everything back in order.
Sometimes on very rare occasions the Julia package repository gets corrupted (especially if you press Ctrl+C in the middle of package installation and have bad luck) and in that case you will need to delete the .julia folder (which is located in your home directory)