Search & Displace
Search and Displace is developing a workflow and toolchain which intends to address the problem of mass search and displacement for document content where the original documents are in a range of forms, including a wide variety of digital document formats, both binary and more modern compressed XML forms, but also encompassing older documents where the only surviving form is printed or even handwritten.
The project website is https://searchanddisplace.com
First install nix following the instructions on their website at https://nixos.org/nix/manual/#chap-installation
The add search-and-displace channel to your nix environment and update it:
nix-channel --add https://git.law/newroco/searchanddisplace/raw/master/pkgs/nixexprs.tar.xz nix-channel --update
You can now install search-and-displace:
nix-env -i search-and-displace