use julia_version Pkg.add kwarg rather than specifying it through ctx

.github/workflows/ci.yml

@@ -66,9 +66,13 @@ jobs:
             squashfs: true
             julia-version: "1.11"
 
-          # - runner: privileged
-          #   squashfs: true
-          #   julia-version: "nightly"
+          - runner: privileged
+            squashfs: true
+            julia-version: "1.12-nightly"
+
+          - runner: privileged
+            squashfs: true
+            julia-version: "nightly"
 
           # Add a job that uses the unprivileged builder with unpacked shards
           - runner: unprivileged

src/Dependencies.jl

@@ -332,6 +332,9 @@ patch(v::VersionNumber) = v.patch
 major(v::Pkg.Types.VersionBound) = v.t[1]
 minor(v::Pkg.Types.VersionBound) = v.t[2]
 patch(v::Pkg.Types.VersionBound) = v.t[3]
+
+# If a version in a PackageSpec is given as a string it signifies being a VersionSpec that Pkg will handle as such.
+__version(v::AbstractString) = __version(PKG_VERSIONS.VersionSpec(v))
 __version(v::VersionNumber) = v
 __version(v::PKG_VERSIONS.VersionSpec) = v.ranges[1].lower
 version(d::AbstractDependency) = __version(getpkg(d).version)