EnvironmentMigrators

This package facilitates the copying of Julia shared environments, particularly between versions, as well as backing up of the current environment.

Specifically these utilities are meant to facilitate the copying of top-level shared environments to another environment. For example, this can help copy a v1.6 environment to a v1.7 environment.

Installation

In the Julia REPL, ] add EnvironmentMigrators

Interactive Use

For interactive use, invoke EnvironmentMigrators.wizard().

julia> using EnvironmentMigrators

julia> EnvironmentMigrators.wizard()
Use the arrow keys to move the cursor. Press enter to select.
Please select a shared environment to copy to C:\Users\KITTIS~1\AppData\Local\Temp\jl_CPGp07\Project.toml:
   __pluto_boot_1.6.0
   v1.5
   v1.6
 > v1.7(current version)
   v1.8
   Backup the current environment: C:\Users\KITTIS~1\AppData\Local\Temp\jl_CPGp07\Project.toml.
   Quit. Do Nothing.
[ Info: Current environment:
      Status `C:\Users\kittisopikulm\AppData\Local\Temp\jl_CPGp07\Project.toml`
  [e51d7f76] EnvironmentMigrators v0.1.0 `C:\Users\kittisopikulm\.julia\dev\EnvironmentMigrators`
┌ Info: Backing up Project.toml and Manifest.toml
│   current_env_project_toml = "C:\\Users\\KITTIS~1\\AppData\\Local\\Temp\\jl_CPGp07\\Project.toml"
│   current_env_manifest_toml = "C:\\Users\\KITTIS~1\\AppData\\Local\\Temp\\jl_CPGp07\\Manifest.toml"
└   backup_dir = "C:\\Users\\KITTIS~1\\AppData\\Local\\Temp\\jl_CPGp07\\backups\\2022-02-03_16_47_33"
┌ Info: Copying selected Project.toml to current environment
│   selected_project_toml = "C:\\Users\\kittisopikulm\\.julia\\environments\\v1.7\\Project.toml"
└   current_env = "C:\\Users\\KITTIS~1\\AppData\\Local\\Temp\\jl_CPGp07"
      Status `C:\Users\kittisopikulm\AppData\Local\Temp\jl_CPGp07\Project.toml
      Status `C:\Users\kittisopikulm\AppData\Local\Temp\jl_CPGp07\Project.toml`
  [6e4b80f9] BenchmarkTools
  ...
    Updating `C:\Users\kittisopikulm\AppData\Local\Temp\jl_CPGp07\Project.toml`
  [6e4b80f9] + BenchmarkTools v1.2.2
  ...
    Updating `C:\Users\kittisopikulm\AppData\Local\Temp\jl_CPGp07\Manifest.toml`
  [1520ce14] + AbstractTrees v0.3.4
  [79e6a3ab] + Adapt v3.3.3
  [4fba245c] + ArrayInterface v4.0.2
  [6e4b80f9] + BenchmarkTools v1.2.2
...
[ Info: Migration successful
      Status `C:\Users\kittisopikulm\AppData\Local\Temp\jl_CPGp07\Project.toml`
...

Non-interactive Use

julia.exe -e '
using Pkg
Pkg.activate(mktempdir())
Pkg.add(\"EnvironmentMigrators\")
using EnvironmentMigrators
EnvironmentMigrators.migrate_selected_environment(joinpath(DEPOT_PATH[1], \"environments\", \"v1.6\"))
'

Backup the current environment

julia> using EnvironmentMigrators

julia> EnvironmentMigrators.backup_current_environment()
[ Info: Current environment:
      Status `C:\Users\kittisopikulm\.julia\environments\v1.8\Project.toml`
  [6e4b80f9] BenchmarkTools v1.2.1
  [5ba52731] CodecLz4 v0.4.0
  [e51d7f76] EnvironmentMigrators v0.1.0 `C:\Users\kittisopikulm\.julia\dev\EnvironmentMigrators`
  [5752ebe1] GMT v0.35.0
  [28b8d3ca] GR v0.57.4
  [f67ccb44] HDF5 v0.16.1 `C:\Users\kittisopikulm\.julia\dev\HDF5`
  [23992714] MAT v0.10.1 `C:\Users\kittisopikulm\.julia\dev\MAT`
  [14b8a8f1] PkgTemplates v0.7.26
  [91a5bcdd] Plots v1.15.2
  [c46f51b8] ProfileView v0.6.11
  [295af30f] Revise v3.1.11
  [a91e544d] SymmetricFormats v0.1.0 `C:\Users\kittisopikulm\.julia\dev\SymmetricFormats`
  [c28d94ed] UInt12Arrays v0.2.0 `C:\Users\kittisopikulm\.julia\dev\UInt12Arrays`
  [1986cc42] Unitful v1.6.0
  [d2c73de3] GR_jll v0.57.2+0
  [9166e923] ImarisWriter_jll v0.0.1+0
  [ea2cea3b] Qt5Base_jll v5.15.2+0 `C:\Users\kittisopikulm\.julia\dev\Qt5Base_jll`
┌ Info: Backing up Project.toml and Manifest.toml
│   current_env_project_toml = "C:\\Users\\kittisopikulm\\.julia\\environments\\v1.8\\Project.toml"
│   current_env_manifest_toml = "C:\\Users\\kittisopikulm\\.julia\\environments\\v1.8\\Manifest.toml"
└   backup_dir = "C:\\Users\\kittisopikulm\\.julia\\environments\\v1.8\\backups\\2022-02-03_17_41_24"

Manually moving environments without this package

To manually move environments, copy the Project.toml and Manifest.toml from the old environment to the new environment, backing up Project.toml and Manifest.toml as needed. The default environments live in joinpath(first(DEPOT_PATH), "environments"). This is usually ~/.julia/environments or C:\Users\YourUsername\.julia\environments.

It is generally not recommended to heavily populate the default version-specific environments. Rather use project specific environments by using changing directories to your project folder and then ] activate.

julia> environments_dir = joinpath(first(DEPOT_PATH), "environments")
"C:\\Users\\kittisopikulm\\.julia\\environments"

julia> readdir(environments_dir)
5-element Vector{String}:
 "__pluto_boot_1.6.0"
 "v1.5"
 "v1.6"
 "v1.7"
 "v1.8"

julia> v17_project = joinpath(environments_dir, "v1.7", "Project.toml")
"C:\\Users\\kittisopikulm\\.julia\\environments\\v1.7\\Project.toml"

julia> v17_manifest = joinpath(environments_dir, "v1.7", "Manifest.toml")
"C:\\Users\\kittisopikulm\\.julia\\environments\\v1.7\\Manifest.toml"

julia> v18_project = joinpath(environments_dir, "v1.8", "Project.toml")
"C:\\Users\\kittisopikulm\\.julia\\environments\\v1.8\\Project.toml"

julia> v18_manifest = joinpath(environments_dir, "v1.8", "Manifest.toml")
"C:\\Users\\kittisopikulm\\.julia\\environments\\v1.8\\Manifest.toml"

julia> timestamp = Dates.format(Dates.now(), "yyyy-mm-dd_HH_MM_SS")
"2022-02-03_16_30_38"

julia> backup_dir = joinpath(dirname(v18_project), "backups", timestamp)

julia> mkpath(backup_dir)
"C:\\Users\\kittisopikulm\\.julia\\environments\\v1.8\\backups\\2022-02-03_16_30_38"

julia> isfile(v18_project) && mv(v18_project, joinpath(backup_dir, "Project.toml"))
false

julia> isfile(v18_manifest) && mv(v18_manifest, joinpath(backup_dir, "Manifest.toml"))
"C:\\Users\\kittisopikulm\\.julia\\environments\\v1.8\\backups\\2022-02-03_16_30_38\\Manifest.toml"

julia> using Pkg

julia> Pkg.activate(v18_project)

julia> Pkg.resolve()

julia> Pkg.instantiate()

Getting Help

Migrating environments can present unexpected challenges. For further help, see the Pkg.jl documentation. For community assistance, see https://julialang.org/community/

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