nil pointer evaluating page.Page.IsHome on "blog only" site

[E-G-C]

Similar to #804, when a site is set to "blog only" we get the error:

failed to render pages: render of "home" failed: 
..../modules/pkg/mod/github.com/google/[email protected]/layouts/blog/list.html:2:13": execute of template failed at <.Parent.IsHome>: nil pointer evaluating page.Page.IsHome 

steps to reproduce:

• create a new docsy site from scratch
• create an _index.md into the content directory:

---
tittle: "Some index"
linkTitle: "my index"
date: 2022-07-25
cascade:
  - type: "blog"

---
index content

• launch hugo server if you have not
• open localhost:1313 in your browser
• check for the error mentioned above

 failed to render pages: render of "home" failed: "/var/folders/4d/k9zf9mfx2bj1z46bsmh4zr4h0000gn/T/hugo_cache/modules/filecache/modules/pkg/mod/github.com/google/[email protected]/layouts/blog/list.html:2:13": execute of template failed at <.Parent.IsHome>: nil pointer evaluating page.Page.IsHome 
/var/folders/4d/k9zf9mfx2bj1z46bsmh4zr4h0000gn/T/hugo_cache/modules/filecache/modules/pkg/mod/github.com/google/[email protected]/layouts/blog/list.html:2:13:
{{ define "main" }}
{{ if .Parent.IsHome }}
{{ $.Scratch.Set "blog-pages" (where .Site.RegularPages "Section" .Section) }}
{{ else }}
hugo v0.100.2+extended darwin/arm64 BuildDate=unknown

[chalin]

Thanks for the clean and simple repro @E-G-C!

[chalin]

Fixed. Can you give it a try @E-G-C?

[E-G-C]

yes, the error is gone, got some warnings though

WARNING: calling IsSet with unsupported type "invalid" (<nil>) will always return false.

[chalin]

@E-G-C, thanks for the feedback. Do you have a repro, or can you share a link to your repo?

[chalin]

@E-G-C - feel free to reopen this issue if you'd like the warning addressed.