From 59c55f4558ff2faa70a987200b9e0b6fc5636a14 Mon Sep 17 00:00:00 2001
From: Felix Buehler <account@buehler.rocks>
Date: Tue, 21 Dec 2021 15:29:42 +0100
Subject: [PATCH] update-walker: remove because unused

---
 .../upstream-updater/attrset-to-dir.nix       |  19 --
 .../upstream-updater/create-src-info-git.sh   |  24 --
 .../upstream-updater/create-src-info.sh       |  20 --
 .../build-support/upstream-updater/design.txt |  29 --
 .../upstream-updater/snippets.sh              |  14 -
 .../upstream-updater/test-case.nix            |  13 -
 .../upstream-updater/update-upstream-data.sh  | 182 ----------
 .../update-walker-service-specific.sh         |  20 --
 .../upstream-updater/update-walker.sh         | 320 ------------------
 .../upstream-updater/update-walker.txt        | 118 -------
 pkgs/stdenv/generic/check-meta.nix            |   2 -
 11 files changed, 761 deletions(-)
 delete mode 100644 pkgs/build-support/upstream-updater/attrset-to-dir.nix
 delete mode 100755 pkgs/build-support/upstream-updater/create-src-info-git.sh
 delete mode 100755 pkgs/build-support/upstream-updater/create-src-info.sh
 delete mode 100644 pkgs/build-support/upstream-updater/design.txt
 delete mode 100644 pkgs/build-support/upstream-updater/snippets.sh
 delete mode 100644 pkgs/build-support/upstream-updater/test-case.nix
 delete mode 100755 pkgs/build-support/upstream-updater/update-upstream-data.sh
 delete mode 100644 pkgs/build-support/upstream-updater/update-walker-service-specific.sh
 delete mode 100755 pkgs/build-support/upstream-updater/update-walker.sh
 delete mode 100644 pkgs/build-support/upstream-updater/update-walker.txt

diff --git a/pkgs/build-support/upstream-updater/attrset-to-dir.nix b/pkgs/build-support/upstream-updater/attrset-to-dir.nix
deleted file mode 100644
index 006537278dae..000000000000
--- a/pkgs/build-support/upstream-updater/attrset-to-dir.nix
+++ /dev/null
@@ -1,19 +0,0 @@
-a :
-a.stdenv.mkDerivation {
-  buildCommand = ''
-    mkdir -p "$out/attributes"
-  '' + (a.lib.concatStrings (map
-    (n: ''
-      ln -s "${a.writeTextFile {name=n; text=builtins.getAttr n a.theAttrSet;}}" $out/attributes/${n};
-    '')
-    (builtins.attrNames a.theAttrSet)
-  ));
-
-  name = "attribute-set";
-  meta = {
-    description = "Contents of an attribute set";
-    maintainers = [
-      a.lib.maintainers.raskin
-    ];
-  };
-}
diff --git a/pkgs/build-support/upstream-updater/create-src-info-git.sh b/pkgs/build-support/upstream-updater/create-src-info-git.sh
deleted file mode 100755
index 6687a1f8f411..000000000000
--- a/pkgs/build-support/upstream-updater/create-src-info-git.sh
+++ /dev/null
@@ -1,24 +0,0 @@
-#! /bin/sh
-
-[ -z "$1" ] && {
-  echo "Use $0 expression-basename repo-url branch-name package-base-name"
-  echo "Like:"
-  echo "$0 default http://git.example.com/repo origin/master hello"
-  exit 1;
-} >&2
-
-own_dir="$(cd "$(dirname "$0")"; sh -c pwd)"
-
-cp "$own_dir/../builder-defs/template-bdp-uud.nix" "$1.nix" 
-sed -e "s@src-for-default.nix@src-for-$1.nix@g; 
-    s@fetchUrlFromSrcInfo@fetchGitFromSrcInfo@g" -i "$1.nix"
-echo '{}' > "src-for-$1.nix"
-cat << EOF > src-info-for-$1.nix
-{
-  repoUrl = "$2";
-  rev = "$3";
-  baseName = "$4";
-  method = "fetchgit";
-}
-EOF
-
diff --git a/pkgs/build-support/upstream-updater/create-src-info.sh b/pkgs/build-support/upstream-updater/create-src-info.sh
deleted file mode 100755
index fbbbe33a9e7b..000000000000
--- a/pkgs/build-support/upstream-updater/create-src-info.sh
+++ /dev/null
@@ -1,20 +0,0 @@
-#! /bin/sh
-
-[ -z "$1" ] && {
-  echo "Use $0 expression-basename download-page package-base-name"
-  echo "Like:"
-  echo "$0 default http://example.com/downloads hello"
-  exit 1;
-} >&2
-
-own_dir="$(cd "$(dirname "$0")"; sh -c pwd)"
-
-cp "$own_dir/../builder-defs/template-auto-callable.nix" "$1.nix" 
-sed -e "s@src-for-default.nix@src-for-$1.nix@g" -i "$1.nix"
-echo '{}' > "src-for-$1.nix"
-cat << EOF > src-info-for-$1.nix
-{
-  downloadPage = "$2";
-  baseName = "$3";
-}
-EOF
diff --git a/pkgs/build-support/upstream-updater/design.txt b/pkgs/build-support/upstream-updater/design.txt
deleted file mode 100644
index 128be89d2075..000000000000
--- a/pkgs/build-support/upstream-updater/design.txt
+++ /dev/null
@@ -1,29 +0,0 @@
-Next to file.nix we get src-for-file.nix 
-src-for-file.nix should evaluate to a flat attribute set with 
-string values.
-It is supposed to be imported in the main expression.
-In the ideal world it can export url, hash, version.
-
-src-for-file.nix generation is directed by 
-src-info-for-file.nix.
-
-Attributes:
-
-src-info-for-file.nix:
-
-downloadPage
-rev (for repos)
-baseName (default = unnamed-package)
-sourceRegexp (default = '.*[.]tar[.].*')
-choiceCommand (default = 'head -1')
-versionExtractorSedScript (default = 's/.*-([0-9.]+)[.].*/\1/')
-versionReferenceCreator (default = 's/-([0-9.]+)[.]/-${version}./')
-mirrorSedScript (default = none)
-
-src-for-file.nix:
-
-advertisedUrl (its match is the check for update presence)
-url
-hash
-version
-name
diff --git a/pkgs/build-support/upstream-updater/snippets.sh b/pkgs/build-support/upstream-updater/snippets.sh
deleted file mode 100644
index 2c06696c928f..000000000000
--- a/pkgs/build-support/upstream-updater/snippets.sh
+++ /dev/null
@@ -1,14 +0,0 @@
-# sed scripts
-
-#http://sourceforge.net/projects/webdruid/files/webdruid/0.6.0-alpha5/webdruid-0.6.0-alpha5.tar.gz/download
-#http://downloads.sourceforge.net/webdruid/files/webdruid/0.6.0-alpha5/webdruid-0.6.0-alpha5.tar.gz
-skipRedirectSF='s@sourceforge.net/projects@downloads.sourceforge.net/project@; s@/files@@; s@/download$@@;'
-extractReleaseSF='s@.*/([^/]+)/[^/]+@\1@'
-extractVersionSF='s@.*/[^/0-9]*([0-9].*)[.](tar|tgz|tbz2|zip).*@\1@'
-apacheMirror='s@http://www.apache.org/dist/@mirror://apache/@'
-skipRedirectApache='s@/dyn/closer.cgi[?]path=@/dist@'
-
-replaceAllVersionOccurences() {
-	echo s/"$version"/\${version}/g
-}
-dashDelimitedVersion='s/.*-([0-9.]+)-.*/\1/'
diff --git a/pkgs/build-support/upstream-updater/test-case.nix b/pkgs/build-support/upstream-updater/test-case.nix
deleted file mode 100644
index 498f15c28a78..000000000000
--- a/pkgs/build-support/upstream-updater/test-case.nix
+++ /dev/null
@@ -1,13 +0,0 @@
-{
-  a=1;
-  b="text";
-  c=''
-  text
-  '';
-  d=''
-    Multi-line text with special characters - 
-    like \ (backslash) and ''${} (dollar + 
-    curly braces) and $ (dollar) and ' (quote)
-    and " (double quote).
-  '';
-}
diff --git a/pkgs/build-support/upstream-updater/update-upstream-data.sh b/pkgs/build-support/upstream-updater/update-upstream-data.sh
deleted file mode 100755
index 38c0d13a723d..000000000000
--- a/pkgs/build-support/upstream-updater/update-upstream-data.sh
+++ /dev/null
@@ -1,182 +0,0 @@
-#! /bin/sh
-
-set -x
-
-own_dir="$(cd "$(dirname "$0")"; sh -c pwd)"
-
-source "$own_dir/snippets.sh"
-
-[ -z "$1" ] && {
-  echo "Specify main expression filename."
-  exit 1;
-}
-
-main_file="$1"
-main_dir="$(cd "$(dirname "$main_file")" ; sh -c pwd)"
-file_name="$(basename "$main_file")"
-defs_file="$main_dir"/src-info-for-"$file_name"
-src_file="$main_dir"/src-for-"$file_name"
-# OK, [vcs] revert is always possible
-new_src_file="$main_dir"/src-for-"$file_name"
-
-forcedUrl="$2"
-
-defs_dir="$("$own_dir"/attrset-to-dir.sh "$defs_file")"
-src_defs_dir="$("$own_dir"/attrset-to-dir.sh "$src_file")"
-
-getAttr () {
-    file="$defs_dir"/"$1"
-    data="$( ( [ -f "$file" ] && cat "$file" ) || echo "$2" )"
-    echo "attribute $1 obtained as: [[$data]]" >&2
-    echo "$data"
-}
-
-method="$(getAttr method fetchurl)"
-baseName="$(getAttr baseName 'unnamed-package')"
-commonPrefetchVars=" version name hash"
-
-prefetchClause=""
-[ fetchSFdirs = "$method" ] && {
-    if [ -z "$forcedUrl" ]; then 
-	freshUrl="$("$own_dir"/urls-from-page.sh "$(getAttr downloadPage)" |
-          eval "egrep '$(getAttr sourceRegexp '[-][0-9.]+/$')'" | 
-	  eval "egrep -v '$(getAttr blacklistRegexp '^$')'" |
-	  eval "$(getAttr choiceCommand 'head -n 1')" |
-	  eval "$(getAttr versionToFileCommand "sed -re 's@/([^/]*-[0-9.]+)/@/\1/\1$(getAttr fileSuffix .tar.gz)@'")" 
-	)"
-
-	if ! egrep ':' <<< "$freshUrl" ; then 
-		freshUrl="$(dirname "$(getAttr downloadPage).")/$freshUrl"
-	fi
-
-	echo "Found download link: $freshUrl" >&2
-    else
-        freshUrl="$forcedUrl"
-    fi
-
-    freshUrl="$(echo "$freshUrl" | sed -re "$skipRedirectSF")"
-    echo "Sourceforge-corrected URL: $freshUrl" >&2
-    
-    version="$(echo "$freshUrl" | 
-      sed -re "$(getAttr versionExtractorSedScript "$extractVersionSF")")"
-    baseName="$(getAttr baseName "$(echo "$freshUrl" | sed -re 's@.*/project/([^/]+)/.*@\1@')")"
-    url="$freshUrl"
-    name="$baseName-$version"
-    advertisedUrl="$freshUrl"
-
-    if [ x"$freshUrl" = x"$(cat "$src_defs_dir"/advertisedUrl)" ]; then
-        echo "Source link not changed" >&2
-        exit
-    fi
-    hash=$(nix-prefetch-url "$freshUrl")
-
-    prefetchVars="url advertisedUrl";
-}
-[ fetchSF = "$method" ] && {
-    if [ -z "$forcedUrl" ]; then 
-	freshUrl="$("$own_dir"/urls-from-page.sh "$(getAttr downloadPage)" |
-          eval "egrep \"$(getAttr sourceRegexp '.*[.]tar[.].*|.*[.]tgz$|.*[.]tbz2$')\"" | 
-	  eval "egrep -v \"$(getAttr blacklistRegexp '^$')\"" |
-          eval "$(getAttr choiceCommand 'head -1')")"
-
-	if ! egrep ':' <<< "$freshUrl" ; then 
-		freshUrl="$(dirname "$(getAttr downloadPage).")/$freshUrl"
-	fi
-
-	echo "Found download link: $freshUrl" >&2
-    else
-        freshUrl="$forcedUrl"
-    fi
-
-    freshUrl="$(echo "$freshUrl" | sed -re "$skipRedirectSF")"
-    echo "Sourceforge-corrected URL: $freshUrl" >&2
-    
-    version="$(echo "$freshUrl" | 
-      sed -re "$(getAttr versionExtractorSedScript "$extractVersionSF")")"
-    baseName="$(getAttr baseName "$(echo "$freshUrl" | sed -re 's@.*/project/([^/]+)/.*@\1@')")"
-    url="$freshUrl"
-    name="$baseName-$version"
-    advertisedUrl="$freshUrl"
-
-    if [ x"$freshUrl" = x"$(cat "$src_defs_dir"/advertisedUrl)" ]; then
-        echo "Source link not changed" >&2
-        exit
-    fi
-    hash=$(nix-prefetch-url "$freshUrl")
-
-    prefetchVars="url advertisedUrl";
-}
-[ fetchurl = "$method" ] && {
-    if [ -z "$forcedUrl" ] ; then
-        freshUrl="$("$own_dir"/urls-from-page.sh "$(getAttr downloadPage)" |
-          eval "egrep \"$(getAttr sourceRegexp  '.*[.]tar[.].*|.*[.]tgz$|.*[.]tbz2$')\"" | 
-	  eval "egrep -v \"$(getAttr blacklistRegexp '^$')\"" |
-          eval "$(getAttr choiceCommand 'head -1')")"
-    
-        if ! egrep ':' <<< "$freshUrl" ; then 
-    	    freshUrl="$(dirname "$(getAttr downloadPage).")/$freshUrl"
-        fi
-    
-        echo "Found download link: $freshUrl" >&2
-    else
-        freshUrl="$forcedUrl"
-    fi
-    
-    version="$(echo "$freshUrl" | 
-      eval "sed -re \"$(getAttr versionExtractorSedScript \
-        's/.*-([0-9.]+)[.].*/\1/')\"")"
-    
-    mirrorUrl="$(echo "$freshUrl" | 
-      eval "sed -r -e \"$(getAttr versionReferenceCreator \
-        's/-'"${version}"'[.]/-\${version}./')\"" |
-      eval "sed -r -e \"$(getAttr mirrorSedScript)\"")"
-    url="$mirrorUrl"
-    
-    name="$baseName-$version"
-    
-    advertisedUrl="$freshUrl"
-    url="$mirrorUrl"
-    
-    if [ x"$freshUrl" = x"$(cat "$src_defs_dir"/advertisedUrl)" ]; then
-        echo "Source link not changed" >&2
-        exit
-    fi
-    hash=$(nix-prefetch-url "$freshUrl")
-
-    prefetchVars="url advertisedUrl";
-}
-[ "fetchgit" = "$method" ] && {
-    repoUrl="$(getAttr repoUrl)"
-    export NIX_PREFETCH_GIT_CHECKOUT_HOOK="
-        cat .git/HEAD
-    "
-    export NIX_HASH_ALGO=sha256
-    rev="$(getAttr rev '')";
-    rev_and_hash="$("$own_dir"/../fetchgit/nix-prefetch-git "$repoUrl" "$rev" | tee /dev/stderr | tail -2)"
-
-    rev="$(echo "$rev_and_hash" | head -1)"
-    url="$repoUrl";
-    hash="$(echo "$rev_and_hash" | tail -1)"
-    version="$rev"
-    name="$baseName-$version"
-
-    prefetchVars="rev url";
-}
-
-prefetchAssignments="";
-for i in $commonPrefetchVars $prefetchVars; do
-  prefetchAssignments="$prefetchAssignments $i=\"$(eval echo \"\$$i\")\";$(echo -e '\n  ')"
-done;
-
-extraAssignments=""
-for i in $(getAttr extraVars ''); do
-  eval "$(getAttr "eval_$i" 'i=""')"
-  extraAssignments="$extraAssignments $i=\"$(eval echo \"\$$i\")\";$(echo -e '\n  ')"
-done
-
-cat << EOF > "$new_src_file"
-rec {
-  $prefetchAssignments
-  $extraAssignments
-}
-EOF
diff --git a/pkgs/build-support/upstream-updater/update-walker-service-specific.sh b/pkgs/build-support/upstream-updater/update-walker-service-specific.sh
deleted file mode 100644
index d92d223845e6..000000000000
--- a/pkgs/build-support/upstream-updater/update-walker-service-specific.sh
+++ /dev/null
@@ -1,20 +0,0 @@
-SF_redirect () {
-  redirect 99
-  process 'http://[a-z]+[.]dl[.]sourceforge[.]net/' 'mirror://sourceforge/'
-  process '[?].*' ''
-}
-
-SF_version_dir () {
-  version_link 'http://sourceforge.net/.+/'"$1"'[0-9.]+/$'
-}
-
-SF_version_tarball () {
-  version_link "${1:-[.]tar[.]}.*/download\$"
-}
-
-GH_latest () {
-  prefetch_command_rel ../fetchgit/nix-prefetch-git
-  revision "$("$(dirname "$0")/urls-from-page.sh" "$CURRENT_URL/commits" | grep /commit/ | head -n 1 | xargs basename )"
-  version '.*' "git-$(date +%Y-%m-%d)"
-  NEED_TO_CHOOSE_URL=
-}
diff --git a/pkgs/build-support/upstream-updater/update-walker.sh b/pkgs/build-support/upstream-updater/update-walker.sh
deleted file mode 100755
index 9172a41718c8..000000000000
--- a/pkgs/build-support/upstream-updater/update-walker.sh
+++ /dev/null
@@ -1,320 +0,0 @@
-#! /bin/sh
-
-own_dir="$(cd "$(dirname "$0")"; pwd)"
-
-URL_WAS_SET=
-DL_URL_RE=
-CURRENT_URL=
-CURRENT_REV=
-PREFETCH_COMMAND=
-NEED_TO_CHOOSE_URL=1
-
-url () {
-  URL_WAS_SET=1
-  CURRENT_URL="$1"
-}
-
-dl_url_re () {
-  DL_URL_RE="$1"
-}
-
-version_unpack () {
-  sed -re '
-    s/[.]/ /g; 
-    s@/@ / @g
-    s/-(rc|pre)/ -1 \1 /g; 
-    s/-(gamma)/ -2 \1 /g; 
-    s/-(beta)/ -3 \1 /g; 
-    s/-(alpha)/ -4 \1 /g;
-    s/[-]/ - /g; 
-    '
-}
-
-version_repack () {
-  sed -re '
-    s/ - /-/g;
-    s/ -[0-9]+ ([a-z]+) /-\1/g;
-    s@ / @/@g
-    s/ /./g; 
-    '
-}
-
-version_sort () {
-  version_unpack | 
-    sort -t ' ' -n $(for i in $(seq 30); do echo " -k${i}n" ; done) | tac |
-    version_repack
-}
-
-position_choice () {
-  head -n "${1:-1}" | tail -n "${2:-1}"
-}
-
-matching_links () {
-  "$own_dir"/urls-from-page.sh "$CURRENT_URL" | grep -E "$1"
-}
-
-link () {
-  CURRENT_URL="$(matching_links "$1" | position_choice "$2" "$3")"
-  unset NEED_TO_CHOOSE_URL
-  echo "Linked by: $*"
-  echo "URL: $CURRENT_URL" >&2
-}
-
-version_link () {
-  CURRENT_URL="$(matching_links "$1" | version_sort | position_choice "$2" "$3")"
-  unset NEED_TO_CHOOSE_URL
-  echo "Linked version by: $*"
-  echo "URL: $CURRENT_URL" >&2
-}
-
-redirect () {
-  CURRENT_URL="$(curl -I -L --max-redirs "${1:-99}" "$CURRENT_URL" | 
-    grep -E '^[Ll]ocation: ' | position_choice "${2:-999999}" "$3" |
-    sed -e 's/^[Ll]ocation: //; s/\r//')"
-  echo "Redirected: $*"
-  echo "URL: $CURRENT_URL" >&2
-}
-
-replace () {
-  sed -re "s	$1	$2	g"
-}
-
-process () {
-  CURRENT_URL="$(echo "$CURRENT_URL" | replace "$1" "$2")"
-  echo "Processed: $*"
-  echo "URL: $CURRENT_URL" >&2
-}
-
-version () {
-  CURRENT_VERSION="$(echo "$CURRENT_URL" | replace "$1" "$2")"
-  echo "Version: $CURRENT_VERSION" >&2
-}
-
-ensure_version () {
-  echo "Ensuring version. CURRENT_VERSION: $CURRENT_VERSION" >&2
-  [ -z "$CURRENT_VERSION" ] && version '.*-([0-9.]+)[-._].*' '\1'
-}
-
-ensure_target () {
-  echo "Ensuring target. CURRENT_TARGET: $CURRENT_TARGET" >&2
-  [ -z "$CURRENT_TARGET" ] && target "$(basename "$CONFIG_NAME" .upstream).nix"
-}
-
-ensure_name () {
-  echo "Ensuring name. CURRENT_NAME: $CURRENT_NAME" >&2
-  [ -z "$CURRENT_NAME" ] && name "$(basename "$CONFIG_DIR")"
-  echo "Resulting name: $CURRENT_NAME"
-}
-
-ensure_attribute_name () {
-  echo "Ensuring attribute name. CURRENT_ATTRIBUTE_NAME: $CURRENT_ATTRIBUTE_NAME" >&2
-  ensure_name
-  [ -z "$CURRENT_ATTRIBUTE_NAME" ] && attribute_name "$CURRENT_NAME"
-  echo "Resulting attribute name: $CURRENT_ATTRIBUTE_NAME"
-}
-
-ensure_url () {
-  echo "Ensuring starting URL. CURRENT_URL: $CURRENT_URL" >&2
-  ensure_attribute_name
-  [ -z "$CURRENT_URL" ] && CURRENT_URL="$(retrieve_meta downloadPage)"
-  [ -z "$CURRENT_URL" ] && CURRENT_URL="$(retrieve_meta downloadpage)"
-  [ -z "$CURRENT_URL" ] && CURRENT_URL="$(retrieve_meta homepage)"
-  echo "Resulting URL: $CURRENT_URL"
-}
-
-ensure_choice () {
-  echo "Ensuring that choice is made." >&2
-  echo "NEED_TO_CHOOSE_URL: [$NEED_TO_CHOOSE_URL]." >&2
-  echo "CURRENT_URL: $CURRENT_URL" >&2
-  [ -z "$URL_WAS_SET" ] && [ -z "$CURRENT_URL" ] && ensure_url
-  [ -n "$NEED_TO_CHOOSE_URL" ] && {
-    version_link "${DL_URL_RE:-[.]tar[.]([^./])+\$}"
-    unset NEED_TO_CHOOSE_URL
-  }
-  [ -z "$CURRENT_URL" ] && {
-    echo "Error: empty CURRENT_URL"
-    echo "Error: empty CURRENT_URL" >&2
-    exit 1
-  }
-}
-
-revision () {
-  CURRENT_REV="$1"
-  echo "CURRENT_REV: $CURRENT_REV"
-}
-
-prefetch_command () {
-  PREFETCH_COMMAND="$1"
-}
-
-prefetch_command_rel () {
-  PREFETCH_COMMAND="$(dirname "$0")/$1"
-}
-
-ensure_hash () {
-  echo "Ensuring hash. CURRENT_HASH: $CURRENT_HASH" >&2
-  [ -z "$CURRENT_HASH" ] && hash
-}
-
-hash () {
-  CURRENT_HASH="$(${PREFETCH_COMMAND:-nix-prefetch-url} "$CURRENT_URL" $CURRENT_REV)"
-  echo "CURRENT_HASH: $CURRENT_HASH" >&2
-}
-
-name () {
-  CURRENT_NAME="$1"
-  echo "CURRENT_NAME: $CURRENT_NAME" >&2
-}
-
-attribute_name () {
-  CURRENT_ATTRIBUTE_NAME="$1"
-  echo "CURRENT_ATTRIBUTE_NAME: $CURRENT_ATTRIBUTE_NAME" >&2
-}
-
-retrieve_meta () {
-  nix-instantiate --eval-only '<nixpkgs>' -A "$CURRENT_ATTRIBUTE_NAME".meta."$1" | xargs
-}
-
-retrieve_version () {
-  PACKAGED_VERSION="$(retrieve_meta version)"
-}
-
-ensure_dl_url_re () {
-  echo "Ensuring DL_URL_RE. DL_URL_RE: $DL_URL_RE" >&2
-  [ -z "$DL_URL_RE" ] && dl_url_re "$(retrieve_meta downloadURLRegexp)"
-  echo "DL_URL_RE: $DL_URL_RE" >&2
-}
-
-directory_of () {
-  cd "$(dirname "$1")"; pwd
-}
-
-full_path () {
-  echo "$(directory_of "$1")/$(basename "$1")"
-}
-
-target () {
-  CURRENT_TARGET="$1"
-  { [ "$CURRENT_TARGET" = "${CURRENT_TARGET#/}" ] && CURRENT_TARGET="$CONFIG_DIR/$CURRENT_TARGET"; }
-  echo "Target set to: $CURRENT_TARGET"
-}
-
-marker () {
-  BEGIN_EXPRESSION="$1"
-}
-
-update_found () {
-  echo "Compare: $CURRENT_VERSION vs $PACKAGED_VERSION"
-  [ "$CURRENT_VERSION" != "$PACKAGED_VERSION" ]
-}
-
-do_write_expression () {
-  echo "${1}rec {"
-  echo "${1}  baseName=\"$CURRENT_NAME\";"
-  echo "${1}  version=\"$CURRENT_VERSION\";"
-  echo "${1}  name=\"\${baseName}-\${version}\";"
-  echo "${1}  hash=\"$CURRENT_HASH\";"
-  echo "${1}  url=\"$CURRENT_URL\";"
-  [ -n "$CURRENT_REV" ] && echo "${1}  rev=\"$CURRENT_REV\";"
-  echo "${1}  sha256=\"$CURRENT_HASH\";"
-  echo "$2"
-}
-
-line_position () {
-  file="$1"
-  regexp="$2"
-  count="${3:-1}"
-  grep -E "$regexp" -m "$count" -B 999999 "$file" | wc -l
-}
-
-replace_once () {
-  file="$1"
-  regexp="$2"
-  replacement="$3"
-  instance="${4:-1}"
-
-  echo "Replacing once:"
-  echo "file: [[$file]]"
-  echo "regexp: [[$regexp]]"
-  echo "replacement: [[$replacement]]"
-  echo "instance: [[$instance]]"
-
-  position="$(line_position "$file" "$regexp" "$instance")"
-  sed -re "${position}s	$regexp	$replacement	" -i "$file"
-}
-
-set_var_value () {
-  var="${1}"
-  value="${2}"
-  instance="${3:-1}"
-  file="${4:-$CURRENT_TARGET}"
-  no_quotes="${5:-0}"
-
-  quote='"'
-  let "$no_quotes" && quote=""
-
-  replace_once "$file" "${var} *= *.*" "${var} = ${quote}${value}${quote};" "$instance"
-}
-
-do_regenerate () {
-  BEFORE="$(cat "$1" | grep -F "$BEGIN_EXPRESSION" -B 999999;)"
-  AFTER_EXPANDED="$(cat "$1" | grep -F "$BEGIN_EXPRESSION" -A 999999 | grep -E '^ *[}] *; *$' -A 999999;)"
-  AFTER="$(echo "$AFTER_EXPANDED" | tail -n +2)"
-  CLOSE_BRACE="$(echo "$AFTER_EXPANDED" | head -n 1)"
-  SPACING="$(echo "$CLOSE_BRACE" | sed -re 's/[^ ].*//')"
-
-  echo "$BEFORE"
-  do_write_expression "$SPACING" "$CLOSE_BRACE"
-  echo "$AFTER"
-}
-
-do_overwrite () {
-  ensure_hash
-  do_regenerate "$1" > "$1.new.tmp"
-  mv "$1.new.tmp" "$1"
-}
-
-do_overwrite_just_version () {
-  ensure_hash
-  set_var_value version $CURRENT_VERSION
-  set_var_value sha256 $CURRENT_HASH
-}
-
-minimize_overwrite() {
-  do_overwrite(){
-    do_overwrite_just_version
-  }
-}
-
-process_config () {
-  CONFIG_DIR="$(directory_of "$1")"
-  CONFIG_NAME="$(basename "$1")"
-  BEGIN_EXPRESSION='# Generated upstream information';
-  if [ -f  "$CONFIG_DIR/$CONFIG_NAME" ] &&
-      [ "${CONFIG_NAME}" = "${CONFIG_NAME%.nix}" ]; then
-    source "$CONFIG_DIR/$CONFIG_NAME"
-  else
-    CONFIG_NAME="${CONFIG_NAME%.nix}"
-    ensure_attribute_name
-    [ -n "$(retrieve_meta updateWalker)" ] ||
-        [ -n "$FORCE_UPDATE_WALKER" ] || {
-      echo "Error: package not marked as safe for update-walker" >&2
-      echo "Set FORCE_UPDATE_WALKER=1 to override" >&2
-      exit 1;
-    }
-    [ -z "$(retrieve_meta fullRegenerate)" ] && eval "
-      minimize_overwrite
-    "
-  fi
-  ensure_attribute_name
-  retrieve_version
-  ensure_dl_url_re
-  ensure_choice
-  ensure_version
-  ensure_target
-  update_found && do_overwrite "$CURRENT_TARGET"
-}
-
-source "$own_dir/update-walker-service-specific.sh"
-
-process_config "$1"
diff --git a/pkgs/build-support/upstream-updater/update-walker.txt b/pkgs/build-support/upstream-updater/update-walker.txt
deleted file mode 100644
index ae47e5590294..000000000000
--- a/pkgs/build-support/upstream-updater/update-walker.txt
+++ /dev/null
@@ -1,118 +0,0 @@
-update-walker is an imperative semiautomated update helper.
-
-It runs the X.upstream file to find the freshest version of the package in
-the specified upstream source and updates the corresponding X.nix file.
-
-
-
-The simplest available commands:
-
-url: set the upstream source list URL equal to $1; the default is
-meta.downloadPage with meta.homepage fallback
-
-dl_url_re: set the regular expression used to select download links to $1; the
-default is meta.downloadURLRegexp or '[.]tar[.]([^./])+\$' if it is not set
-
-target: specify target expression; default is to replace .upstream extension
-with .nix extension
-
-name: specify the derivation name; default is the basename of the dirname
-of the .upstream file
-
-attribute_name: specify the attribute name to evaluate for getting the current
-version from meta.version; default is to use the derivation name
-
-minimize_overwrite: set config options that mean that only version= and
-sha256= have to be replaced; the default is to regenerate a full upstream
-description block with url, name, version, hash etc.
-
-
-
-A lot of packages can be updated in a pseudo-declarative style using only
-the commands from the previous paragraph.
-
-Some packages do not need any non-default settings, in these case just setting
-meta.updateWalker to true is enough, you can run update-walker directly on the
-.nix file afterwards. In this case minimize_overwrite it implied unless
-meta.fullRegenerate is set.
-
-
-
-The packages that require more fine-grained control than the described options
-allow, you need to take into account the default control flow of the tool.
-
-First, the definitions from update-walker script and additional definitions
-from update-walker-service-specific.sh are loaded. Then the config is executed
-as a shell script. Some of the commands it can use do remember whether they
-have been used. Afterwards the following steps happen: 
-
-attribute_name is set to name unless it has been already set
-
-meta.version is read from the NixPkgs package called attribute_name
-
-download URL regexp is set to default unless it has been already set in the
-updater script
-
-the download page URL gets set to default value unless it has been set
-previously
-
-if the action of getting the download page and choosing the freshest link by
-version has not yet been taken, it happens
-
-if the version has not yet been extracted from the URL, it gets extracted
-
-target nix expression to update gets set to the default value unless it has
-been set explicitly
-
-if the URL version is fresher than the packaged version, the new file gets
-downloaded and its hash is calculated
-
-do_overwrite function is called; the default calculates a big upstream data
-block and puts it after the '# Generated upstream information' marker (the
-marker can be changed by the command marker)
-
-
-
-If the update needs some special logic, it is put into the updater script and
-the corresponding steps are skipped because the needed action has already been
-performed. 
-
-For example: 
-
-minimize_overwrite is exactly the same as
-
-do_overwrite() { do_overwrite_just_version; }
-
-redefinition. You can do a more complex do_overwrite redifinition, if needed.
-It can probably use ensure_hash to download the source and calculate the hash
-and set_var_value.
-
-set_var_value alters the $3-th instance of assigning the $1 name in the
-expression to the value $2. $3 defaults to 1. It can modify $4 instead of the
-current target, it can put the value without quotes if $5 is 1.
-
-
-
-Typical steps include:
-
-ensure_choice: download current URL and find the freshest version link on the
-page, it is now the new URL
-
-ensure_hash: download current URL and calculate the source package hash
-
-ensure_version: extract version from the URL
-
-SF_redirect: replace the current URL with a SourceForge.net mirror:// URL
-
-SF_version_dir: assume SourceForge.net layout and choose the freshest
-version-named subdirectory in the file catalog; you can optionally specify $1
-as a directory name regexp (digits and periods will be required after it)
-
-SF_version_tarball: assume SourceForge.net layout and choose the freshest
-tarball download link
-
-version: apply replacement of $1 with $2 (extended regexp format) to extract
-the version from URL
-
-version_link: choose the freshest versioned link, $1 is the regexp of
-acceptable links
diff --git a/pkgs/stdenv/generic/check-meta.nix b/pkgs/stdenv/generic/check-meta.nix
index ba3c8eef20e6..7a70accb723f 100644
--- a/pkgs/stdenv/generic/check-meta.nix
+++ b/pkgs/stdenv/generic/check-meta.nix
@@ -236,7 +236,6 @@ let
     name = str;
     version = str;
     tag = str;
-    updateWalker = bool;
     executables = listOf str;
     outputsToInstall = listOf str;
     position = str;
@@ -244,7 +243,6 @@ let
     repositories = attrsOf str;
     isBuildPythonPackage = platforms;
     schedulingPriority = int;
-    downloadURLRegexp = str;
     isFcitxEngine = bool;
     isIbusEngine = bool;
     isGutenprint = bool;