Update: Thanks to JuliaRegistries/General#647, the version cap of the package Distributions has now been removed, so that one can directly install the package GLM along with Distributions v0.19.2.
Background
I’m reading the book Statistics with Julia, which makes use of GLM.
Problem
I encountered the following error, which I posted in the issue GLM.jl#311.
(v1.1) pkg> add GLM
Resolving package versions...
ERROR: Unsatisfiable requirements detected for package GLM [38e38edf]:
GLM [38e38edf] log:
├─possible versions are: [0.2.0-0.2.5, 0.3.0-0.3.2, 0.4.0-0.4.8, 0.5.0-0.5.6, 0
.6.0-0.6.1, 0.7.0, 0.8.0-0.8.1, 0.9.0, 0.10.0-0.10.1, 0.11.0, 1.0.0-1.0.2, 1.1.0
-1.1.1] or uninstalled
├─restricted to versions * by an explicit requirement, leaving only versions [0
.2.0-0.2.5, 0.3.0-0.3.2, 0.4.0-0.4.8, 0.5.0-0.5.6, 0.6.0-0.6.1, 0.7.0, 0.8.0-0.8
.1, 0.9.0, 0.10.0-0.10.1, 0.11.0, 1.0.0-1.0.2, 1.1.0-1.1.1]
├─restricted by compatibility requirements with DataFrames [a93c6f00] to versio
ns: [0.4.0-0.4.8, 0.5.0-0.5.6, 0.6.0-0.6.1, 0.7.0, 0.8.0-0.8.1, 0.9.0, 0.10.0-0.
10.1, 0.11.0, 1.0.0-1.0.2, 1.1.0-1.1.1] or uninstalled, leaving only versions: [
0.4.0-0.4.8, 0.5.0-0.5.6, 0.6.0-0.6.1, 0.7.0, 0.8.0-0.8.1, 0.9.0, 0.10.0-0.10.1,
0.11.0, 1.0.0-1.0.2, 1.1.0-1.1.1]
│ └─DataFrames [a93c6f00] log:
│ ├─possible versions are: [0.1.0, 0.2.0-0.2.5, 0.3.0-0.3.16, 0.4.0-0.4.3, 0.
5.0-0.5.12, 0.6.0-0.6.11, 0.7.0-0.7.8, 0.8.0-0.8.5, 0.9.0-0.9.1, 0.10.0-0.10.1,
0.11.0-0.11.7, 0.12.0, 0.13.0-0.13.1, 0.14.0-0.14.1, 0.15.0-0.15.2, 0.16.0, 0.17
.0-0.17.1, 0.18.0-0.18.2] or uninstalled
│ └─restricted to versions 0.18.2 by an explicit requirement, leaving only ve
rsions 0.18.2
├─restricted by compatibility requirements with StatsBase [2913bbd2] to version
s: [0.11.0, 1.0.0-1.0.2, 1.1.0-1.1.1] or uninstalled, leaving only versions: [0.
11.0, 1.0.0-1.0.2, 1.1.0-1.1.1]
│ └─StatsBase [2913bbd2] log:
│ ├─possible versions are: [0.1.0, 0.2.0-0.2.1, 0.2.3-0.2.10, 0.3.0-0.3.13, 0
.4.0-0.4.4, 0.5.0-0.5.3, 0.6.0-0.6.16, 0.7.0-0.7.4, 0.8.0-0.8.3, 0.9.0, 0.10.0,
0.11.0-0.11.1, 0.12.0, 0.13.0-0.13.1, 0.14.0-0.14.1, 0.15.0, 0.16.0-0.16.1, 0.17
.0, 0.18.0, 0.19.0-0.19.5, 0.20.0-0.20.1, 0.22.0, 0.23.0-0.23.1, 0.24.0, 0.25.0,
0.26.0, 0.27.0, 0.28.0-0.28.1, 0.29.0, 0.30.0] or uninstalled
│ └─restricted to versions 0.30.0 by an explicit requirement, leaving only ve
rsions 0.30.0
└─restricted by compatibility requirements with Distributions [31c24e10] to ver
sions: uninstalled — no versions left
└─Distributions [31c24e10] log:
├─possible versions are: [0.1.0-0.1.4, 0.2.0-0.2.13, 0.3.0, 0.6.4-0.6.7, 0.
7.0-0.7.6, 0.8.0-0.8.10, 0.9.0, 0.10.0-0.10.2, 0.11.0-0.11.1, 0.12.0-0.12.5, 0.1
3.0, 0.14.0-0.14.2, 0.15.0, 0.16.0-0.16.4, 0.17.0, 0.18.0, 0.19.1-0.19.2] or uni
nstalled
└─restricted to versions 0.19.2 by an explicit requirement, leaving only ve
rsions 0.19.2
Discussion
Although the packages StatsBase and DataFrames appear in the above error message, the cause of this problem was actually the package Distributions.
The system first checked the “compatibility requirements”, then it showed the matching version number or “uninstalled” on the right-hand side “leaving only versions” of the same line.
I had installed Distributions through the pkg’s REPL, so I had the package
at version 0.19.2 only. From the answer in the linked GitHub issue,
it’s incompatible with GLM for the moment.
I had mistaken the short package UUID “31c24e10” as the package release’s Git
SHA1 hash. To easily check the package’s compatibility, I should have looked
for the section [compat] in the package’s project.toml.
Solution
Now, it’s clear that I should install an older version of the package Distributions for GLM’s installation. Thanks to Stefan Karpinski’s answer on Julia Discourse, I’ve successfully solved this incompatibility problem.
julia> # press `]` to activate the package REPL mode...
(v1.1) pkg> activate .
(StatsWithJuliaBook) pkg> add Distributions@0.18.0
(StatsWithJuliaBook) pkg> add GLM
v1.1 refers to ~/.julia/environments/v1.1; StatsWithJuliaBook is the
current working directory.