recordings: Make record.sh ensure recent enough asciinema

.github/workflows/linux_and_macos.yml

@@ -70,7 +70,6 @@ jobs:
           brew tap homebrew/cask-fonts
           brew install \
             agg \
-            asciinema \
             coreutils \
             font-liberation \
             imagemagick
@@ -114,6 +113,7 @@ jobs:
         if: "${{ runner.os == 'macOS' }}"
         run: |-
           ./recordings/record.sh
+          rm -Rf recordings/venv/
 
       - name: 'Upload UI test renderings for inspection'
         if: "${{ runner.os == 'macOS' }}"

CONTRIBUTING.md

@@ -42,10 +42,10 @@ On a Debian-based Linux including Ubuntu, you would need to install…
 ```console
 $ sudo apt-get update
 $ sudo apt-get install --no-install-recommends -V \
-    asciinema \
     ca-certificates \
     cargo \
-    fonts-liberation
+    fonts-liberation \
+    python3-venv
 $ cargo install --git https://github.com/asciinema/agg
 ```
 

recordings/.gitignore

@@ -1,2 +1,3 @@
+/venv/
 /actual*.*
 /diff*.png

recordings/record.sh

@@ -18,6 +18,11 @@ export FAKETIME=yesplease
 
 cd "${self_dir}"
 
+# Ensure recent asciinema with --cols and --rows argument support
+[[ -d venv/ ]] || python3 -m venv venv/
+source venv/bin/activate
+pip3 install asciinema==2.3.0
+
 # Check and report on runtime requirements
 which agg asciinema convert realpath timeout ttyplot