Use maximum(itr; init=default)

src/Operations.jl

@@ -218,12 +218,8 @@ function set_maximum_version_registry!(ctx::Context, pkg::PackageSpec)
         pathvers = keys(load_versions(ctx, path; include_yanked=false))
         union!(pkgversions, pathvers)
     end
-    if length(pkgversions) == 0
-        pkg.version = VersionNumber(0)
-    else
-        max_version = maximum(pkgversions)
-        pkg.version = VersionNumber(max_version.major, max_version.minor, max_version.patch, max_version.prerelease, ("",))
-    end
+    max_version = maximum(pkgversions; init=VersionNumber(0))
+    pkg.version = VersionNumber(max_version.major, max_version.minor, max_version.patch, max_version.prerelease, ("",))
 end
 
 function load_deps(ctx::Context, pkg::PackageSpec)::Dict{String,UUID}
@@ -691,7 +687,7 @@ function download_source(ctx::Context, pkgs::Vector{PackageSpec},
     end
 
     widths = [textwidth(pkg.name) for (pkg, _) in pkgs_to_install]
-    max_name = length(widths) == 0 ? 0 : maximum(widths)
+    max_name = maximum(widths; init=0)
 
     ########################################
     # Install from archives asynchronously #
@@ -900,7 +896,7 @@ function build_versions(ctx::Context, uuids::Vector{UUID}; might_need_to_resolve
     # toposort builds by dependencies
     order = dependency_order_uuids(ctx, map(first, builds))
     sort!(builds, by = build -> order[first(build)])
-    max_name = isempty(builds) ? 0 : maximum(textwidth.([build[2] for build in builds]))
+    max_name = maximum(build->textwidth(build[2]), builds; init=0)
     # build each package versions in a child process
     for (uuid, name, source_path, version) in builds
         pkg = PackageSpec(;uuid=uuid, name=name, version=version)

src/Resolve/graphtype.jl

@@ -853,7 +853,7 @@ end
 function showlogjournal(io::IO, rlog::ResolveLog)
     journal = rlog.journal
     id(p) = p == UUID0 ? "[global event]" : pkgID(p, rlog)
-    padding = maximum(length(id(p)) for (p,_) in journal)
+    padding = maximum(length(id(p)) for (p,_) in journal; init=0)
     for (p,msg) in journal
         println(io, ' ', rpad(id(p), padding), ": ", msg)
     end