If you are using nix-bitcoin and want to run the latest version of Bitcoin Knots, you will need to install it from the unstable branch.
Edit the file configuration.nix and add
--------------------------------
services.bitcoind.package = let
pkgsUnstable = import (builtins.fetchTarball {
# nixpkgs-unstable as of 2023-12-12
url = "https://github.com/NixOS/nixpkgs/archive/f63e74871f46b4bad723740799298aca7416511c.tar.gz";
sha256 = "06hnc0bmpz8y95r59hpzfv0czwka6vxld6a28vazggdyhr1f4d27";
}) {};
in
pkgsUnstable.bitcoind-knots;
----------------------------
This example is for v28.1.knots20250305. To use a newer version, update the url and sha256 fields as follows:
1. Go to https://search.nixos.org/packages and search for bitcoin knots, then click on the source link.
2. Find the latest commit and click on it (for this example f63e748).
3. The commit hash will be part of the URL. Use it to construct the tarball URL: https://github.com/NixOS/nixpkgs/archive/commit_hash.tar.gz
For this example: f63e74871f46b4bad723740799298aca7416511c
4. Run nix-prefetch-url --unpack https://github.com/NixOS/nixpkgs/archive/commit_hash.tar.gz to get the SHA256.
2. Find the latest commit and click on it (for this example f63e748).
3. The commit hash will be part of the URL. Use it to construct the tarball URL: https://github.com/NixOS/nixpkgs/archive/commit_hash.tar.gz
For this example: f63e74871f46b4bad723740799298aca7416511c
4. Run nix-prefetch-url --unpack https://github.com/NixOS/nixpkgs/archive/commit_hash.tar.gz to get the SHA256.