Add pdf link to the docs

.github/workflows/test.yml

@@ -104,3 +104,9 @@ jobs:
           julia --project=docs --color=yes docs/make.jl pdf
         env:
           DOCUMENTER_KEY: ${{ secrets.DOCUMENTER_KEY }}
+      - name: Upload documentation artifacts
+        uses: actions/upload-artifact@v4
+        if: always()
+        with:
+          name: pkg-docs
+          path: docs/build/

docs/src/index.md

@@ -4,6 +4,23 @@ Welcome to the documentation for Pkg, [Julia](https://julialang.org)'s package m
 The documentation covers many things, for example managing package
 installations, developing packages, working with package registries and more.
 
+```@eval
+import Markdown
+# For Pkg, we need to determine the appropriate Julia version for the PDF
+# Since Pkg docs are versioned by Julia version, we'll use a similar approach to Julia docs
+julia_patch = if VERSION.prerelease == ()
+    "v$(VERSION.major).$(VERSION.minor).$(VERSION.patch)"
+elseif VERSION.prerelease[1] == "DEV"
+    "dev"
+end
+file = "Pkg.jl.pdf"
+url = "https://raw.githubusercontent.com/JuliaLang/Pkg.jl/gh-pages-pdf/$(julia_patch)/$(file)"
+Markdown.parse("""
+!!! note
+    The documentation is also available in PDF format: [$file]($url).
+""")
+```
+
 Throughout the manual the REPL interface to Pkg, the Pkg REPL mode, is used in the examples.
 There is also a functional API, which is preferred when not working
 interactively. This API is documented in the [API Reference](@ref) section.