querying info about missing paths querying info about '/nix/store/kx5c72nqz1pjya4nv7l2k6lgfqhv9v96-nix-tools-exe-truncate-index-0.1.0.0' on 'https://cache.nixos.org' downloading 'https://cache.nixos.org/kx5c72nqz1pjya4nv7l2k6lgfqhv9v96.narinfo' querying info about '/nix/store/kx5c72nqz1pjya4nv7l2k6lgfqhv9v96-nix-tools-exe-truncate-index-0.1.0.0' on 'https://public-plutonomicon.cachix.org' downloading 'https://public-plutonomicon.cachix.org/kx5c72nqz1pjya4nv7l2k6lgfqhv9v96.narinfo' querying info about '/nix/store/kx5c72nqz1pjya4nv7l2k6lgfqhv9v96-nix-tools-exe-truncate-index-0.1.0.0' on 'https://hercules-ci.cachix.org' downloading 'https://hercules-ci.cachix.org/kx5c72nqz1pjya4nv7l2k6lgfqhv9v96.narinfo' querying info about '/nix/store/kx5c72nqz1pjya4nv7l2k6lgfqhv9v96-nix-tools-exe-truncate-index-0.1.0.0' on 'https://iohk.cachix.org' downloading 'https://iohk.cachix.org/kx5c72nqz1pjya4nv7l2k6lgfqhv9v96.narinfo' querying info about '/nix/store/kx5c72nqz1pjya4nv7l2k6lgfqhv9v96-nix-tools-exe-truncate-index-0.1.0.0' on 'https://cache.nixos.org' downloading 'https://cache.nixos.org/kx5c72nqz1pjya4nv7l2k6lgfqhv9v96.narinfo' querying info about '/nix/store/kx5c72nqz1pjya4nv7l2k6lgfqhv9v96-nix-tools-exe-truncate-index-0.1.0.0' on 'https://public-plutonomicon.cachix.org' downloading 'https://public-plutonomicon.cachix.org/kx5c72nqz1pjya4nv7l2k6lgfqhv9v96.narinfo' querying info about '/nix/store/kx5c72nqz1pjya4nv7l2k6lgfqhv9v96-nix-tools-exe-truncate-index-0.1.0.0' on 'https://hercules-ci.cachix.org' downloading 'https://hercules-ci.cachix.org/kx5c72nqz1pjya4nv7l2k6lgfqhv9v96.narinfo' querying info about '/nix/store/kx5c72nqz1pjya4nv7l2k6lgfqhv9v96-nix-tools-exe-truncate-index-0.1.0.0' on 'https://iohk.cachix.org' downloading 'https://iohk.cachix.org/kx5c72nqz1pjya4nv7l2k6lgfqhv9v96.narinfo' building '/nix/store/bqrr7ns6qs1gkcqwndkdv46d83xp668y-nix-tools-exe-truncate-index-0.1.0.0.drv' unpacking sources unpacking source archive /nix/store/6ik6w2w272kjjxwvma3kqmhf2nklcxac-source-root-exe-truncate-index source root is source-root-exe-truncate-index patching sources configuring Configure flags: --prefix=/nix/store/kx5c72nqz1pjya4nv7l2k6lgfqhv9v96-nix-tools-exe-truncate-index-0.1.0.0 exe:truncate-index --package-db=clear --package-db=/nix/store/bmdjwbrg14kmkyxqn9dcrsr7k90la1ls-nix-tools-exe-truncate-index-0.1.0.0-config/lib/ghc-8.10.7/package.conf.d --exact-configuration --dependency=optparse-applicative=optparse-applicative-0.16.1.0-9QWHEfOLLBHK7o3oSDMbY9 --dependency=zlib=zlib-0.6.2.3-CuwNeMoOGkhAM4DkSe0Y42 --dependency=tar=tar-0.5.1.1-Jil08NVbTcDD1KXOkyo7O --dependency=rts=rts --dependency=ghc-heap=ghc-heap-8.10.7 --dependency=ghc-prim=ghc-prim-0.6.1 --dependency=integer-gmp=integer-gmp-1.0.3.0 --dependency=base=base-4.14.3.0 --dependency=deepseq=deepseq-1.4.4.0 --dependency=array=array-0.5.4.0 --dependency=ghc-boot-th=ghc-boot-th-8.10.7 --dependency=pretty=pretty-1.1.3.6 --dependency=template-haskell=template-haskell-2.16.0.0 --dependency=ghc-boot=ghc-boot-8.10.7 --dependency=ghc=ghc-8.10.7 --dependency=array=array-0.5.4.0 --dependency=binary=binary-0.8.8.0 --dependency=bytestring=bytestring-0.10.12.0 --dependency=containers=containers-0.6.5.1 --dependency=directory=directory-1.3.6.0 --dependency=filepath=filepath-1.4.2.1 --dependency=ghc-boot=ghc-boot-8.10.7 --dependency=ghc-compact=ghc-compact-0.1.0.0 --dependency=ghc-prim=ghc-prim-0.6.1 --dependency=hpc=hpc-0.6.1.0 --dependency=mtl=mtl-2.2.2 --dependency=parsec=parsec-3.1.14.0 --dependency=process=process-1.6.13.2 --dependency=text=text-1.2.4.1 --dependency=time=time-1.9.3 --dependency=transformers=transformers-0.5.6.2 --dependency=unix=unix-2.7.2.2 --dependency=xhtml=xhtml-3000.2.2.1 --with-ghc=ghc --with-ghc-pkg=ghc-pkg --with-hsc2hs=hsc2hs --with-gcc=cc --with-ld=ld.gold --ghc-option=-optl-fuse-ld=gold --ld-option=-fuse-ld=gold --with-ar=ar --with-strip=strip --disable-executable-stripping --disable-library-stripping --disable-library-profiling --disable-profiling --enable-static --enable-shared --disable-coverage --enable-library-for-ghci --enable-split-sections Configuring executable 'truncate-index' for nix-tools-0.1.0.0.. Warning: 'hs-source-dirs: cabal-name' directory does not exist. Warning: 'hs-source-dirs: cabal2nix' directory does not exist. Warning: 'hs-source-dirs: hackage2nix' directory does not exist. Warning: 'hs-source-dirs: hashes2nix' directory does not exist. Warning: 'hs-source-dirs: lib' directory does not exist. Warning: 'hs-source-dirs: lts2nix' directory does not exist. Warning: 'hs-source-dirs: plan2nix' directory does not exist. Warning: 'hs-source-dirs: stack-repos' directory does not exist. Warning: 'hs-source-dirs: stack2nix' directory does not exist. building Preprocessing executable 'truncate-index' for nix-tools-0.1.0.0.. Building executable 'truncate-index' for nix-tools-0.1.0.0.. [1 of 1] Compiling Main ( truncate-index/Main.hs, dist/build/truncate-index/truncate-index-tmp/Main.o ) truncate-index/Main.hs:16:1: warning: [-Wunused-imports] The import of ‘Data.Semigroup’ is redundant except perhaps to import instances from ‘Data.Semigroup’ To import instances alone, use: import Data.Semigroup()  | 16 | import Data.Semigroup ((<>))  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Linking dist/build/truncate-index/truncate-index ... installing Installing executable truncate-index in /nix/store/kx5c72nqz1pjya4nv7l2k6lgfqhv9v96-nix-tools-exe-truncate-index-0.1.0.0/bin Warning: The directory /nix/store/kx5c72nqz1pjya4nv7l2k6lgfqhv9v96-nix-tools-exe-truncate-index-0.1.0.0/bin is not in the system search path. post-installation fixup patching script interpreter paths in /nix/store/kx5c72nqz1pjya4nv7l2k6lgfqhv9v96-nix-tools-exe-truncate-index-0.1.0.0 checking for references to /build/ in /nix/store/kx5c72nqz1pjya4nv7l2k6lgfqhv9v96-nix-tools-exe-truncate-index-0.1.0.0... running install tests no Makefile or custom installCheckPhase, doing nothing