Make sure delta exists before acutally using it

chezmoi.roots/_home/dot_gitconfig.tmpl

@@ -39,6 +39,7 @@
 # oauthScopes = read_repository
 [core]
     editor = vim
+    {{- if lookPath "delta" -}}
     # delta will used as the default pager for git
     # and ov as the default pager for delta
     # the pager will be overloaded via the [pager] section for a few commands
@@ -53,6 +54,7 @@
     # It allows to maintain a simpler config file and avoid escaping quotes
     diff = delta --features ov-diff
     log  = delta --features ov-log
+    {{- end -}}
 
 [interactive]
     diffFilter = delta --color-only

chezmoi.roots/_src.all/.chezmoi.toml.tmpl

@@ -157,6 +157,7 @@ scriptTempDir={{ $scriptTempDir | quote }}
    leader-key={{- $zellijLeaderKey | quote }}
 {{- end }}
 
+{{- if lookPath "delta" }}
 [diff]
 #   command = "nvim"
 #   args = ["-d",  "{{ "{{ .Destination }}" }}", "{{ "{{ .Target }}" }}"]
@@ -164,5 +165,6 @@ scriptTempDir={{ $scriptTempDir | quote }}
    command = "delta"
    args = ["--paging=never", "{{ "{{ .Destination }}" }}", "{{ "{{ .Target }}" }}"]
    pager = "moar"
+{{- end -}}
 
 # vim: set ft=toml expandtab tabstop=2 shiftwidth=2: