Remove focal (EOL)

https://lists.ubuntu.com/archives/ubuntu-announce/2025-May/000312.html

Dockerfile-curl.template

@@ -14,7 +14,6 @@ RUN set -eux; \
 	"bullseye", # 0.24
 	# https://packages.ubuntu.com/sq
 	"jammy",    # 0.25
-	"focal",    # no sq
 	empty # trailing comma
 ) then "" else ( -}}
 		sq \

Dockerfile-scm.template

@@ -4,7 +4,7 @@ FROM buildpack-deps:{{ env.codename }}-curl
 RUN set -eux; \
 	apt-get update; \
 	apt-get install -y --no-install-recommends \
-{{ if env.codename | IN("focal", "groovy") then ( -}}
+{{ if env.codename | IN("groovy") then ( -}}
 		bzr \
 {{ ) else "" end -}}
 		git \

generate-stackbrew-library.sh

@@ -93,10 +93,6 @@ for version; do
 		variantAliases=( "${variantAliases[@]//latest-/}" )
 
 		variantArches="$arches"
-		if [ "$version" = 'ubuntu/focal' ] && [ "$variant" != 'curl' ]; then
-			# focal on riscv64 doesn't have mercurial, so we just exclude the upper focal variants from riscv64 entirely
-			variantArches="$(sed -r -e 's/ riscv64 / /g' <<<" $variantArches ")"
-		fi
 
 		echo
 		cat <<-EOE

shared.jq

@@ -11,7 +11,6 @@ def apt_get_dist_clean:
 		# https://launchpad.net/ubuntu/+source/apt
 		# https://packages.ubuntu.com/apt
 		"jammy",
-		"focal",
 
 		empty
 	) then

ubuntu/focal/Dockerfile

@@ -1,54 +0,0 @@
-#
-# NOTE: THIS DOCKERFILE IS GENERATED VIA "apply-templates.sh"
-#
-# PLEASE DO NOT EDIT IT DIRECTLY.
-#
-
-FROM buildpack-deps:focal-scm
-
-RUN set -ex; \
-	apt-get update; \
-	apt-get install -y --no-install-recommends \
-		autoconf \
-		automake \
-		bzip2 \
-		default-libmysqlclient-dev \
-		dpkg-dev \
-		file \
-		g++ \
-		gcc \
-		imagemagick \
-		libbz2-dev \
-		libc6-dev \
-		libcurl4-openssl-dev \
-		libdb-dev \
-		libevent-dev \
-		libffi-dev \
-		libgdbm-dev \
-		libglib2.0-dev \
-		libgmp-dev \
-		libjpeg-dev \
-		libkrb5-dev \
-		liblzma-dev \
-		libmagickcore-dev \
-		libmagickwand-dev \
-		libmaxminddb-dev \
-		libncurses5-dev \
-		libncursesw5-dev \
-		libpng-dev \
-		libpq-dev \
-		libreadline-dev \
-		libsqlite3-dev \
-		libssl-dev \
-		libtool \
-		libwebp-dev \
-		libxml2-dev \
-		libxslt-dev \
-		libyaml-dev \
-		make \
-		patch \
-		unzip \
-		xz-utils \
-		zlib1g-dev \
-	; \
-	rm -rf /var/lib/apt/lists/*

ubuntu/focal/curl/Dockerfile

@@ -1,20 +0,0 @@
-#
-# NOTE: THIS DOCKERFILE IS GENERATED VIA "apply-templates.sh"
-#
-# PLEASE DO NOT EDIT IT DIRECTLY.
-#
-
-FROM ubuntu:focal
-
-RUN set -eux; \
-	apt-get update; \
-	apt-get install -y --no-install-recommends \
-		ca-certificates \
-		curl \
-		gnupg \
-		netbase \
-		wget \
-# https://bugs.debian.org/929417
-		tzdata \
-	; \
-	rm -rf /var/lib/apt/lists/*

ubuntu/focal/scm/Dockerfile

@@ -1,21 +0,0 @@
-#
-# NOTE: THIS DOCKERFILE IS GENERATED VIA "apply-templates.sh"
-#
-# PLEASE DO NOT EDIT IT DIRECTLY.
-#
-
-FROM buildpack-deps:focal-curl
-
-RUN set -eux; \
-	apt-get update; \
-	apt-get install -y --no-install-recommends \
-		bzr \
-		git \
-		mercurial \
-		openssh-client \
-		subversion \
-		\
-# procps is very common in build systems, and is a reasonably small package
-		procps \
-	; \
-	rm -rf /var/lib/apt/lists/*

versions.json

@@ -31,14 +31,6 @@
       ""
     ]
   },
-  "ubuntu/focal": {
-    "suite": "20.04",
-    "variants": [
-      "curl",
-      "scm",
-      ""
-    ]
-  },
   "ubuntu/jammy": {
     "suite": "22.04",
     "variants": [