tomberek
commented
5 months ago @SomeoneSerge Put this together a few days ago. Patchelf and replaceDependency a new glibc into place that will read $PREFIX/etc/ld.so.cache that is pre-populated using the contents of writeClosure.
with import <nixpkgs> { };
let
wrap =
drv:
let
# Remove rpath from all binaries and set new interpreter with cache
new_drv = runCommand "${drv.name}-wrapped" { nativeBuildInputs = [ pkgs.patchelfUnstable ]; } ''
mkdir $out
ln -st $out ${drv}/*
rm -rf $out/bin
mkdir -p $out/bin
cp -r ${drv}/bin/* $out/bin/.
chmod +w $out/bin/*
for f in $out/bin/*; do
patchelf --remove-rpath $f || true
patchelf --set-interpreter ${new_glibc}/lib/${
if drv.system == "x86_64-linux"
then "ld-linux-x86-64.so.2"
else "ld-linux-aarch64.so.1" } $f || true
done
'';
# Replace self-references in glibc
new_glibc = replaceDependency {
drv = new_glibc_pre;
oldDependency = glibc.out;
newDependency = new_glibc_pre;
};
# Create a new glibc derivation that has a targetet ld.so.cache
new_glibc_pre = buildEnv {
name = pkgs.glibc.out.name;
paths = [
(pkgs.runCommand "something" { nativeBuildInputs = [ pkgs.glibc.bin ]; } ''
mkdir $out
mkdir -p $out/etc
mkdir -p $out/lib
cp -R ${glibc.out}/* $out/
chmod +w $out/etc
cat ${pkgs.writeClosure drv} \
| xargs printf "%s\n" \
| xargs -I{} find {} -iname "lib*.so*" -execdir pwd \; \
| sort -u > $out/etc/ld.so.conf
ldconfig -f $out/etc/ld.so.conf -C $out/etc/ld.so.cache
'')
];
};
in
new_drv;
in
builtins.mapAttrs (name: drv: wrap (pkgs.lib.getBin drv)) pkgs
SomeoneSerge
Provide a flake "bundler" recovering the approach described in https://hpc.guix.info/blog/2020/05/faster-relocatable-packs-with-fakechroot/: