I wrote the following function freeze():
# freeze the current package versions; overwrites the current Project.toml file
using Pkg, TOML
"""
freeze()
Freezes the current package versions by adding them to the Project.toml file.
"""
function freeze()
project_file, compat = project_compat()
deps = (TOML.parsefile(project_file))["deps"]
open(project_file, "w") do io
println(io, "[deps]")
TOML.print(io, deps)
println(io)
println(io, "[compat]")
TOML.print(io, compat)
end
nothing
end
"""
project_compat()
Create a dictionary of package dependencies and their current versions.
Returns the full file name of the Project.toml file and the dictionary
`compat` that can be added to the Project.toml file to freeze the package
versions.
"""
function project_compat()
io = IOBuffer();
Pkg.status(; io)
st = String(take!(io))
i = 1
project_file=""
compat = Dict{String, Any}()
for line in eachline(IOBuffer(st))
if i == 1
project_file=line
else
pkg_vers = split(line, "] ")[2]
pkg = split(pkg_vers, " v")[1]
vers = split(pkg_vers, " v")[2]
push!(compat, (String(pkg)=>String("~"*vers)))
end
i += 1
end
project_file = expanduser(split(project_file,'`')[2])
project_file, compat
end
The idea is to fix the current versions of the project dependencies and to commit the generated Project.toml file to git. Compared to committing the Manifest.toml this has the following advantages:
- the project stays compatible with different Julia versions
- changes in the git log are readable (I find the Manifest.toml file unreadable, YMMV)
I might make this more robust, add some options and create a package out of it.
What do you think about this idea?