See https://adventofcode.com/2018/
All commands by default use my personal input file. You can specify a different file by giving it as an argument.
The default nix build will include binaries for every day:
$ nix-build
/nix/store/fcckhqa9mqyh7q3sl4vpii3b8gjl56gg-aoc
$ result/bin/aoc1
2553
78724
$ result/bin/aoc2
24980
qysdtrkloagnfozuwujmhrbvxBuilds for specific days are also possible:
$ nix-build -A aoc2 /nix/store/hd6x5vszsa82b210rj8fx6kshr7zv6wa-aoc2-0.1.0.0 $ result/bin/aoc2 24980 qysdtrkloagnfozuwujmhrbvx
By entering a nix-shell in the project root you can build all packages with cabal new-build:
$ nix-shell [nix-shell:~/aoc]$ cabal new-build aoc1 Up to date [nix-shell:~/aoc]$ cabal new-run aoc2 Up to date 4980 qysdtrkloagnfozuwujmhrbvx
It’s also possible to use cabal build:
[nix-shell:~/aoc]$ cd aoc1 [nix-shell:~/aoc/aoc1]$ cabal configure --datadir . --datasubdir . Resolving dependencies... Configuring aoc1-0.1.0.0... [nix-shell:~/aoc/aoc1]$ cabal run Preprocessing executable 'aoc1' for aoc1-0.1.0.0.. Building executable 'aoc1' for aoc1-0.1.0.0.. Running aoc1... 553 78724
A simple template for the next day can be created by running
$ ./newday 7 Created new template in aoc7