libsecp256k1.so.0 cannot be found after updating nix and running nix-garbage-collect

[kwannoel]

After updating nix version and running nix-garbage-collect, I encounter the following error when trying to build gerbil-ethereum:

> ./build.ss
*** WARNING -- Could not find object file entry point "___LNK_secp256k1_2d_ffi____1_2e_o2"
Gerbil v0.16-192-gfa9537be on Gambit 4.9.3-1447-gc0753ff1
*** ERROR IN load-module -- libsecp256k1.so.0: cannot open shared object file: No such file or directory
(load "/home/noel/.gerbil/lib/clan/crypto/secp256k1-ffi__1.o2")
Process exited with non-zero status
512

The solution is to:

gxpkg clean github.com/fare/gerbil-crypto
gxpkg build github.com/fare/gerbil-crypto

NOTE: gxpkg build alone does not work.

Then ./build.ss for gerbil-ethereum continues to work as per normal.

Note that the file is still not located at that path even after the above steps:

ls: cannot access '/home/noel/.gerbil/lib/clan/crypto/secp256k1-ffi__1.o2': No such file or directory

This seems to suggest some issues with linking to the nix-store path,
either it went missing after garbage collection / there where changes to the store hash for secp256k1 package.

Either a better error message or a fix will be great for this.