Last 50 log lines of nixpkgs:trunk:bsdiff build 2219981 step 1

building /nix/store/17p2lc6m954bfppwkbd2bxkn6z3x0674-bsdiff-4.3
unpacking sources
unpacking source archive /nix/store/dlqyw691dr9hhmr0bihzv5nqb2kq1c5q-bsdiff-4.3.tar.gz
bsdiff-4.3
bsdiff-4.3/Makefile
bsdiff-4.3/bspatch.c
bsdiff-4.3/bsdiff.1
bsdiff-4.3/bsdiff.c
bsdiff-4.3/bspatch.1
source root is bsdiff-4.3
patching sources
configuring
no configure script, doing nothing
building
make flags:    
cc -O3 -lbz2    bsdiff.c   -o bsdiff
/tmp/nix-build-imi2lzdnvd586qahplzc5xaa0m4md9zs-bsdiff-4.3.drv-0/ccDICcQs.o:bsdiff.c:(.text+0x149e): undefined reference to `_BZ2_bzWriteOpen'
/tmp/nix-build-imi2lzdnvd586qahplzc5xaa0m4md9zs-bsdiff-4.3.drv-0/ccDICcQs.o:bsdiff.c:(.text+0x1bd9): undefined reference to `_BZ2_bzWrite'
/tmp/nix-build-imi2lzdnvd586qahplzc5xaa0m4md9zs-bsdiff-4.3.drv-0/ccDICcQs.o:bsdiff.c:(.text+0x1c1c): undefined reference to `_BZ2_bzWrite'
/tmp/nix-build-imi2lzdnvd586qahplzc5xaa0m4md9zs-bsdiff-4.3.drv-0/ccDICcQs.o:bsdiff.c:(.text+0x1c87): undefined reference to `_BZ2_bzWrite'
/tmp/nix-build-imi2lzdnvd586qahplzc5xaa0m4md9zs-bsdiff-4.3.drv-0/ccDICcQs.o:bsdiff.c:(.text+0x1d31): undefined reference to `_BZ2_bzWriteClose'
/tmp/nix-build-imi2lzdnvd586qahplzc5xaa0m4md9zs-bsdiff-4.3.drv-0/ccDICcQs.o:bsdiff.c:(.text+0x1dae): undefined reference to `_BZ2_bzWriteOpen'
/tmp/nix-build-imi2lzdnvd586qahplzc5xaa0m4md9zs-bsdiff-4.3.drv-0/ccDICcQs.o:bsdiff.c:(.text+0x1dd5): undefined reference to `_BZ2_bzWrite'
/tmp/nix-build-imi2lzdnvd586qahplzc5xaa0m4md9zs-bsdiff-4.3.drv-0/ccDICcQs.o:bsdiff.c:(.text+0x1e07): undefined reference to `_BZ2_bzWriteClose'
/tmp/nix-build-imi2lzdnvd586qahplzc5xaa0m4md9zs-bsdiff-4.3.drv-0/ccDICcQs.o:bsdiff.c:(.text+0x1e74): undefined reference to `_BZ2_bzWriteOpen'
/tmp/nix-build-imi2lzdnvd586qahplzc5xaa0m4md9zs-bsdiff-4.3.drv-0/ccDICcQs.o:bsdiff.c:(.text+0x1e9b): undefined reference to `_BZ2_bzWrite'
/tmp/nix-build-imi2lzdnvd586qahplzc5xaa0m4md9zs-bsdiff-4.3.drv-0/ccDICcQs.o:bsdiff.c:(.text+0x1ecd): undefined reference to `_BZ2_bzWriteClose'
collect2: ld returned 1 exit status
make: *** [bsdiff] Error 1
builder for `/nix/store/imi2lzdnvd586qahplzc5xaa0m4md9zs-bsdiff-4.3.drv' failed with exit code 2
error: build of `/nix/store/imi2lzdnvd586qahplzc5xaa0m4md9zs-bsdiff-4.3.drv' failed