Yggdrasil: LoadError: Dependency HDF5_jll specifies a version, use build_version and/or compat instead

giordano · November 29, 2023, 10:19pm

For anyone hitting this issue, I scavenged the script that Alexander was referring to over two years ago, it’s

JuliaPackaging/Yggdrasil/blob/5b9aa3d48766ab2681f6b92e0b7e6116ddfc5e27/N/NetCDF/common.jl#L76


      
              Platform("i686", "windows"),
          ]
          
          # The products that we will ensure are always built
          products = [
              LibraryProduct("libnetcdf", :libnetcdf),
          ]
          
          # Dependencies that must be installed before this package can be built
          dependencies = [
              Dependency(PackageSpec(name="HDF5_jll", version="1.12.0")),
              Dependency("Zlib_jll"),
          ]
          
          jll_stdlibs = Dict(
              v"1.3" => [
                  Dependency("LibCURL_jll", v"7.71.1"),
                  # The following libraries are dependencies of LibCURL_jll which is now a
                  # stdlib, but the stdlib doesn't explicitly list its dependencies
                  Dependency("LibSSH2_jll", v"1.9.0"),
                  Dependency("MbedTLS_jll", v"2.16.8"),

What the error is saying that Dependecy has a PackageSpec argument which specifies the version number, but instead the syntax should be something like

Dependency("HDF5_jll"; compat="1.12.0") # this adds a compat bound in the generated JLL package _and_ uses the minimum compatible version as build version
Dependency("HDF5_jll", v"1.12.0") # this only specifies the version to use for the build, without saving a compat bound in the generated JLL package

The former is preferred to the latter because it’s always better to specific compat bounds when possible.