Skip to content
Unverified Commit 19e83bc2 authored by aszlig's avatar aszlig
Browse files

Merge autoPatchelfHook improvements (#47222)

This includes the initialy commit was done by @Mic92 plus a few fixes
from my side. So essentially this avoids patching statically linked
executables and also speeds up searching for ELF files altogether.

I've tested this by comparing the outputs of all the derivations which
make use of this hook using the following Nix expression:

  let
    getPackagesForRev = rev: with import (builtins.fetchGit {
      url = ./.;
      inherit rev;
    }) { config.allowUnfree = true; }; [
      cups-kyodialog3 elasticsearch franz gurobi javacard-devkit
      masterpdfeditor maxx oracle-instantclient powershell reaper
      teamviewer unixODBCDrivers.msodbcsql17 virtlyst wavebox zoom-us
    ];

    pkgs = import <nixpkgs> {};
    baseRev = "ef764eb0";

  in pkgs.runCommand "diff-contents" {
    chset = pkgs.lib.zipListsWith (old: new: pkgs.runCommand "diff" {
      inherit old new;
      nativeBuildInputs = [ pkgs.nukeReferences ];
    } ''
      mkdir -p "''${NIX_STORE#/}"
      cp --no-preserve=all -r "$old" "''${NIX_STORE#/}"
      cp --no-preserve=all -r "$new" "''${NIX_STORE#/}"
      find "''${old#/}" "''${new#/}" \
        \( -type f -exec nuke-refs {} + \) -o \( -type l -delete \)
      mkdir "$out"
      echo "$old" > "$out/old-path"
      echo "$new" > "$out/new-path"
      diff -Nur "''${old#/}" "''${new#/}" > "$out/diff" || :
    '') (getPackagesForRev baseRev) (getPackagesForRev "");
  } ''
    err=0
    for c in $chset; do
      if [ -s "$c/diff" ]; then
        echo "$(< "$c/old-path") -> $(< "$c/new-path")" \
             "differs, report: $c/diff" >&2
        err=1
      fi
    done
    [ $err -eq 0 ] && touch "$out"
  ''

With these changes there is only one derivation which has altered
contents, which is "franz". However the reason why it has differing
contents is not directly because of the autoPatchelfHook changes, but
because the "env-vars" file from the builder is in
"$out/opt/franz/env-vars" (Cc: @gnidorah) and we now have different
contents for NIX_CFLAGS_COMPILE and other environment variables.

I also tested this against a random static binary and the hook no longer
tries to patch it.

Merges: #47222
parents 8d865c95 8df68a93
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment