store deprecated table under a tags table

Author: KristofferC

src/Registry/registry_instance.jl

@@ -48,7 +48,7 @@ struct PkgInfo
     repo::Union{String, Nothing}
     subdir::Union{String, Nothing}
 
-    # Package.toml [deprecated]:
+    # Package.toml [tags.deprecated]:
     deprecated::Union{Dict{String, Any}, Nothing}
 
     # Versions.toml:
@@ -205,9 +205,10 @@ function init_package_info!(pkg::PkgEntry)
         repo = get(d_p, "repo", nothing)::Union{Nothing, String}
         subdir = get(d_p, "subdir", nothing)::Union{Nothing, String}
 
-        # The presence of a [deprecated] table indicates the package is deprecated
+        # The presence of a [tags.deprecated] table indicates the package is deprecated
         # We store the raw table to allow other tools to use the metadata
-        deprecated = get(d_p, "deprecated", nothing)::Union{Nothing, Dict{String, Any}}
+        tags = get(d_p, "tags", nothing)::Union{Nothing, Dict{String, Any}}
+        deprecated = tags !== nothing ? get(tags, "deprecated", nothing)::Union{Nothing, Dict{String, Any}} : nothing
 
         # Versions.toml
         d_v = custom_isfile(pkg.in_memory_registry, pkg.registry_path, joinpath(pkg.path, "Versions.toml")) ?

test/registry.jl

@@ -360,14 +360,14 @@ end
             )
             write(joinpath(regpath, "Registry.toml"), registry_toml)
 
-            # Create deprecated package with [deprecated] table
+            # Create deprecated package with [tags.deprecated] table
             write(
                 joinpath(regpath, "DeprecatedExample", "Package.toml"), """
                 name = "DeprecatedExample"
                 uuid = "11111111-1111-1111-1111-111111111111"
                 repo = "https://github.com/test/DeprecatedExample.jl.git"
 
-                [deprecated]
+                [tags.deprecated]
                 reason = "This package is no longer maintained"
                 alternative = "Example"
                 """