Hello all,
I notice that each package in my $HOME/.julia/packages/<pkgname>/ folder has what looks like a 5-character hash code - for example, $HOME/.julia/packages/HTTP/aTjcj. Can anyone tell me how this hash is derived, or where it can be read from?
Thanks!
It’s derived from the package UUID and the tree hash as recorded in the manifest.
Start at
"""
pathof(m::Module)
Return the path of the `m.jl` file that was used to `import` module `m`,
or `nothing` if `m` was not imported from a package.
Use [`dirname`](@ref) to get the directory part and [`basename`](@ref)
to get the file name part of the path.
"""
function pathof(m::Module)
@lock require_lock begin
pkgid = get(module_keys, m, nothing)
pkgid === nothing && return nothing
origin = get(pkgorigins, pkgid, nothing)
origin === nothing && return nothing
path = origin.path
path === nothing && return nothing
return fixup_stdlib_path(path)
end
end
and you will eventually land on
write(io, slug_chars[1+d])
end
end
end
function package_slug(uuid::UUID, p::Int=5)
crc = _crc32c(uuid)
return slug(crc, p)
end
function version_slug(uuid::UUID, sha1::SHA1, p::Int=5)
crc = _crc32c(uuid)
crc = _crc32c(sha1.bytes, crc)
return slug(crc, p)
end
mutable struct CachedTOMLDict
path::String
inode::UInt64
mtime::Float64
size::Int64
Thank you! That’s exactly what I needed to know.