maintainers/scripts/update.nix: various fixes (#62478)

maintainers/scripts/update.nix: various fixes

doc/stdenv.xml

@@ -709,19 +709,16 @@ passthru.updateScript = writeScript "update-zoom-us" ''
 <programlisting>
 passthru.updateScript = [ ../../update.sh pname "--requested-release=unstable" ];
 </programlisting>
-      Note that the update scripts will be run in parallel by default; you
-      should avoid running <command>git commit</command> or any other commands
-      that cannot handle that.
+     </para>
+     <para>
+      The script will be usually run from the root of the Nixpkgs repository
+      but you should not rely on that. Also note that the update scripts will
+      be run in parallel by default; you should avoid running <command>git
+      commit</command> or any other commands that cannot handle that.
      </para>
      <para>
       For information about how to run the updates, execute
-      <cmdsynopsis>
-       <command>nix-shell</command> 
-       <arg>
-        maintainers/scripts/update.nix
-       </arg>
-      </cmdsynopsis>
-      .
+      <command>nix-shell maintainers/scripts/update.nix</command>.
      </para>
     </listitem>
    </varlistentry>

maintainers/scripts/update.nix

@@ -20,7 +20,9 @@ let
       in
         [x] ++ nubOn f xs;
 
-  pkgs = import ./../../default.nix { };
+  pkgs = import ./../../default.nix {
+    overlays = [];
+  };
 
   packagesWith = cond: return: set:
     nubOn (pkg: pkg.updateScript)
@@ -67,9 +69,12 @@ let
     let
       attrSet = pkgs.lib.attrByPath (pkgs.lib.splitString "." path) null pkgs;
     in
-      packagesWith (name: pkg: builtins.hasAttr "updateScript" pkg)
-                     (name: pkg: pkg)
-                     attrSet;
+      if attrSet == null then
+        builtins.throw "Attribute path `${path}` does not exists."
+      else
+        packagesWith (name: pkg: builtins.hasAttr "updateScript" pkg)
+                       (name: pkg: pkg)
+                       attrSet;
 
   packageByName = name:
     let
@@ -122,9 +127,17 @@ let
   packageData = package: {
     name = package.name;
     pname = (builtins.parseDrvName package.name).name;
-    updateScript = pkgs.lib.toList package.updateScript;
+    updateScript = map builtins.toString (pkgs.lib.toList package.updateScript);
   };
 
+  packagesJson = pkgs.writeText "packages.json" (builtins.toJSON (map packageData packages));
+
+  optionalArgs =
+    pkgs.lib.optional (max-workers != null) "--max-workers=${max-workers}"
+    ++ pkgs.lib.optional (keep-going == "true") "--keep-going";
+
+  args = [ packagesJson ] ++ optionalArgs;
+
 in pkgs.stdenv.mkDerivation {
   name = "nixpkgs-update-script";
   buildCommand = ''
@@ -139,6 +152,6 @@ in pkgs.stdenv.mkDerivation {
   '';
   shellHook = ''
     unset shellHook # do not contaminate nested shells
-    exec ${pkgs.python3.interpreter} ${./update.py} ${pkgs.writeText "packages.json" (builtins.toJSON (map packageData packages))}${pkgs.lib.optionalString (max-workers != null) " --max-workers=${max-workers}"}${pkgs.lib.optionalString (keep-going == "true") " --keep-going"}
+    exec ${pkgs.python3.interpreter} ${./update.py} ${builtins.concatStringsSep " " args}
   '';
 }

pkgs/common-updater/scripts/update-source-version

@@ -86,14 +86,10 @@ if [ $(grep -c "$oldHash" "$nixFile") != 1 ]; then
     die "Couldn't locate old source hash '$oldHash' (or it appeared more than once) in '$nixFile'!"
 fi
 
-oldUrl=$(nix-instantiate $systemArg --eval -E "with import ./. {}; builtins.elemAt $attr.src.drvAttrs.urls 0" | tr -d '"')
+oldUrl=$(nix-instantiate $systemArg --eval -E "with import ./. {}; builtins.elemAt ($attr.src.drvAttrs.urls or [ $attr.src.url ]) 0" | tr -d '"')
 
 if [ -z "$oldUrl" ]; then
-    oldUrl=$(nix-instantiate $systemArg --eval -E "with import ./. {}; $attr.src.url" | tr -d '"')
-
-    if [ -z "$oldUrl" ]; then
-      die "Couldn't evaluate source url from '$attr.src'!"
-    fi
+    die "Couldn't evaluate source url from '$attr.src'!"
 fi
 
 drvName=$(nix-instantiate $systemArg --eval -E "with import ./. {}; (builtins.parseDrvName $attr.name).name" | tr -d '"')
@@ -109,13 +105,13 @@ if [ "$oldVersion" = "$newVersion" ]; then
 fi
 
 # Escape regex metacharacter that are allowed in store path names
-oldVersion=$(echo "$oldVersion" | sed -re 's|[.+]|\\&|g')
-oldUrl=$(echo "$oldUrl" | sed -re 's|[${}.+]|\\&|g')
+oldVersionEscaped=$(echo "$oldVersion" | sed -re 's|[.+]|\\&|g')
+oldUrlEscaped=$(echo "$oldUrl" | sed -re 's|[${}.+]|\\&|g')
 
-if [ $(grep -c -E "^\s*(let\b)?\s*$versionKey\s*=\s*\"$oldVersion\"" "$nixFile") = 1 ]; then
-    pattern="/\b$versionKey\b\s*=/ s|\"$oldVersion\"|\"$newVersion\"|"
-elif [ $(grep -c -E "^\s*(let\b)?\s*name\s*=\s*\"[^\"]+-$oldVersion\"" "$nixFile") = 1 ]; then
-    pattern="/\bname\b\s*=/ s|-$oldVersion\"|-$newVersion\"|"
+if [ $(grep -c -E "^\s*(let\b)?\s*$versionKey\s*=\s*\"$oldVersionEscaped\"" "$nixFile") = 1 ]; then
+    pattern="/\b$versionKey\b\s*=/ s|\"$oldVersionEscaped\"|\"$newVersion\"|"
+elif [ $(grep -c -E "^\s*(let\b)?\s*name\s*=\s*\"[^\"]+-$oldVersionEscaped\"" "$nixFile") = 1 ]; then
+    pattern="/\bname\b\s*=/ s|-$oldVersionEscaped\"|-$newVersion\"|"
 else
     die "Couldn't figure out where out where to patch in new version in '$attr'!"
 fi
@@ -128,7 +124,7 @@ fi
 
 # Replace new URL
 if [ -n "$newUrl" ]; then
-    sed -i "$nixFile" -re "s|\"$oldUrl\"|\"$newUrl\"|"
+    sed -i "$nixFile" -re "s|\"$oldUrlEscaped\"|\"$newUrl\"|"
 
     if cmp -s "$nixFile" "$nixFile.bak"; then
         die "Failed to replace source URL '$oldUrl' to '$newUrl' in '$attr'!"

pkgs/desktops/gnome-3/update.nix

@@ -1,4 +1,4 @@
-{ stdenv, lib, writeScript, python3, common-updater-scripts, coreutils, gnugrep, gnused }:
+{ stdenv, lib, writeScript, python3, common-updater-scripts }:
 { packageName, attrPath ? packageName, versionPolicy ? "odd-unstable" }:
 
 let
@@ -9,7 +9,7 @@ let
     package_name="$1"
     attr_path="$2"
     version_policy="$3"
-    PATH=${lib.makeBinPath [ common-updater-scripts coreutils gnugrep gnused python ]}
+    PATH=${lib.makeBinPath [ common-updater-scripts python ]}
     latest_tag=$(python "${./find-latest-version.py}" "$package_name" "$version_policy" "stable")
     update-source-version "$attr_path" "$latest_tag"
   '';