From caf1e7203ccdbef4a1913e475f50f7a2a80e20d4 Mon Sep 17 00:00:00 2001 From: Akshay Date: Tue, 1 Dec 2020 19:16:34 +0530 Subject: init --- .gitignore | 3 ++ LICENSE | 20 ++++++++ nix/sources.json | 26 ++++++++++ nix/sources.nix | 148 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ readme.txt | 20 ++++++++ shell.nix | 41 +++++++++++++++ 6 files changed, 258 insertions(+) create mode 100644 .gitignore create mode 100644 LICENSE create mode 100644 nix/sources.json create mode 100644 nix/sources.nix create mode 100644 readme.txt create mode 100644 shell.nix diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..86a7bac --- /dev/null +++ b/.gitignore @@ -0,0 +1,3 @@ +result +.envrc + diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..ca3263e --- /dev/null +++ b/LICENSE @@ -0,0 +1,20 @@ +Copyright 2020 Akshay Oppiliappan + +Permission is hereby granted, free of charge, to any person obtaining +a copy of this software and associated documentation files (the +"Software"), to deal in the Software without restriction, including +without limitation the rights to use, copy, modify, merge, publish, +distribute, sublicense, and/or sell copies of the Software, and to +permit persons to whom the Software is furnished to do so, subject to +the following conditions: + +The above copyright notice and this permission notice shall be +included in all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND +NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE +LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION +OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. diff --git a/nix/sources.json b/nix/sources.json new file mode 100644 index 0000000..9ea73c6 --- /dev/null +++ b/nix/sources.json @@ -0,0 +1,26 @@ +{ + "niv": { + "branch": "master", + "description": "Easy dependency management for Nix projects", + "homepage": "https://github.com/nmattia/niv", + "owner": "nmattia", + "repo": "niv", + "rev": "ba57d5a29b4e0f2085917010380ef3ddc3cf380f", + "sha256": "1kpsvc53x821cmjg1khvp1nz7906gczq8mp83664cr15h94sh8i4", + "type": "tarball", + "url": "https://github.com/nmattia/niv/archive/ba57d5a29b4e0f2085917010380ef3ddc3cf380f.tar.gz", + "url_template": "https://github.com///archive/.tar.gz" + }, + "nixpkgs": { + "branch": "20.03", + "description": "Nix Packages collection", + "homepage": "", + "owner": "NixOS", + "repo": "nixpkgs", + "rev": "5272327b81ed355bbed5659b8d303cf2979b6953", + "sha256": "0182ys095dfx02vl2a20j1hz92dx3mfgz2a6fhn31bqlp1wa8hlq", + "type": "tarball", + "url": "https://github.com/NixOS/nixpkgs/archive/5272327b81ed355bbed5659b8d303cf2979b6953.tar.gz", + "url_template": "https://github.com///archive/.tar.gz" + } +} diff --git a/nix/sources.nix b/nix/sources.nix new file mode 100644 index 0000000..b64b8f8 --- /dev/null +++ b/nix/sources.nix @@ -0,0 +1,148 @@ +# This file has been generated by Niv. + +let + + # + # The fetchers. fetch_ fetches specs of type . + # + + fetch_file = pkgs: spec: + if spec.builtin or true then + builtins_fetchurl { inherit (spec) url sha256; } + else + pkgs.fetchurl { inherit (spec) url sha256; }; + + fetch_tarball = pkgs: name: spec: + let + ok = str: ! builtins.isNull (builtins.match "[a-zA-Z0-9+-._?=]" str); + # sanitize the name, though nix will still fail if name starts with period + name' = stringAsChars (x: if ! ok x then "-" else x) "${name}-src"; + in + if spec.builtin or true then + builtins_fetchTarball { name = name'; inherit (spec) url sha256; } + else + pkgs.fetchzip { name = name'; inherit (spec) url sha256; }; + + fetch_git = spec: + builtins.fetchGit { url = spec.repo; inherit (spec) rev ref; }; + + fetch_local = spec: spec.path; + + fetch_builtin-tarball = name: throw + ''[${name}] The niv type "builtin-tarball" is deprecated. You should instead use `builtin = true`. + $ niv modify ${name} -a type=tarball -a builtin=true''; + + fetch_builtin-url = name: throw + ''[${name}] The niv type "builtin-url" will soon be deprecated. You should instead use `builtin = true`. + $ niv modify ${name} -a type=file -a builtin=true''; + + # + # Various helpers + # + + # The set of packages used when specs are fetched using non-builtins. + mkPkgs = sources: + let + sourcesNixpkgs = + import (builtins_fetchTarball { inherit (sources.nixpkgs) url sha256; }) {}; + hasNixpkgsPath = builtins.any (x: x.prefix == "nixpkgs") builtins.nixPath; + hasThisAsNixpkgsPath = == ./.; + in + if builtins.hasAttr "nixpkgs" sources + then sourcesNixpkgs + else if hasNixpkgsPath && ! hasThisAsNixpkgsPath then + import {} + else + abort + '' + Please specify either (through -I or NIX_PATH=nixpkgs=...) or + add a package called "nixpkgs" to your sources.json. + ''; + + # The actual fetching function. + fetch = pkgs: name: spec: + + if ! builtins.hasAttr "type" spec then + abort "ERROR: niv spec ${name} does not have a 'type' attribute" + else if spec.type == "file" then fetch_file pkgs spec + else if spec.type == "tarball" then fetch_tarball pkgs name spec + else if spec.type == "git" then fetch_git spec + else if spec.type == "local" then fetch_local spec + else if spec.type == "builtin-tarball" then fetch_builtin-tarball name + else if spec.type == "builtin-url" then fetch_builtin-url name + else + abort "ERROR: niv spec ${name} has unknown type ${builtins.toJSON spec.type}"; + + # If the environment variable NIV_OVERRIDE_${name} is set, then use + # the path directly as opposed to the fetched source. + replace = name: drv: + let + saneName = stringAsChars (c: if isNull (builtins.match "[a-zA-Z0-9]" c) then "_" else c) name; + ersatz = builtins.getEnv "NIV_OVERRIDE_${saneName}"; + in + if ersatz == "" then drv else ersatz; + + # Ports of functions for older nix versions + + # a Nix version of mapAttrs if the built-in doesn't exist + mapAttrs = builtins.mapAttrs or ( + f: set: with builtins; + listToAttrs (map (attr: { name = attr; value = f attr set.${attr}; }) (attrNames set)) + ); + + # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/lists.nix#L295 + range = first: last: if first > last then [] else builtins.genList (n: first + n) (last - first + 1); + + # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/strings.nix#L257 + stringToCharacters = s: map (p: builtins.substring p 1 s) (range 0 (builtins.stringLength s - 1)); + + # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/strings.nix#L269 + stringAsChars = f: s: concatStrings (map f (stringToCharacters s)); + concatStrings = builtins.concatStringsSep ""; + + # fetchTarball version that is compatible between all the versions of Nix + builtins_fetchTarball = { url, name, sha256 }@attrs: + let + inherit (builtins) lessThan nixVersion fetchTarball; + in + if lessThan nixVersion "1.12" then + fetchTarball { inherit name url; } + else + fetchTarball attrs; + + # fetchurl version that is compatible between all the versions of Nix + builtins_fetchurl = { url, sha256 }@attrs: + let + inherit (builtins) lessThan nixVersion fetchurl; + in + if lessThan nixVersion "1.12" then + fetchurl { inherit url; } + else + fetchurl attrs; + + # Create the final "sources" from the config + mkSources = config: + mapAttrs ( + name: spec: + if builtins.hasAttr "outPath" spec + then abort + "The values in sources.json should not have an 'outPath' attribute" + else + spec // { outPath = replace name (fetch config.pkgs name spec); } + ) config.sources; + + # The "config" used by the fetchers + mkConfig = + { sourcesFile ? if builtins.pathExists ./sources.json then ./sources.json else null + , sources ? if isNull sourcesFile then {} else builtins.fromJSON (builtins.readFile sourcesFile) + , pkgs ? mkPkgs sources + }: rec { + # The sources, i.e. the attribute set of spec name to spec + inherit sources; + + # The "pkgs" (evaluated nixpkgs) to use for e.g. non-builtin fetchers + inherit pkgs; + }; + +in +mkSources (mkConfig {}) // { __functor = _: settings: mkSources (mkConfig settings); } diff --git a/readme.txt b/readme.txt new file mode 100644 index 0000000..49ff08a --- /dev/null +++ b/readme.txt @@ -0,0 +1,20 @@ +advent of code +-------------- + +some solutions to aoc 2020, written in haskell. + + +build +----- + +each day's solution is a separate cabal executable: + + + cabal run DayXX + + +or with nix: + + + nix-build + ./result/bin/DayXX diff --git a/shell.nix b/shell.nix new file mode 100644 index 0000000..f1d55b5 --- /dev/null +++ b/shell.nix @@ -0,0 +1,41 @@ +let + sources = import ./nix/sources.nix; + pkgs = import sources.nixpkgs {}; + + inherit (pkgs) haskellPackages; + all-hls = pkgs.fetchFromGitHub { + owner = "masaeedu"; + repo = "all-hls"; + rev = "155e57d7ca9f79ce293360f98895e9bd68d12355"; + sha256 = "04s3mrxjdr7gmd901l1z23qglqmn8i39v7sdf2fv4zbv6hz24ydb"; + }; + + hls = import all-hls { + platform = "Linux"; + version = "0.4.0"; + ghc = "8.6.5"; + }; # All parameters are optional. The default values are shown here. + + + haskellDeps = ps: with ps; [ + base + lens + parsec + mtl + ]; + + ghc = haskellPackages.ghcWithPackages haskellDeps; + + externalPackages = [ + ghc + pkgs.gdb + pkgs.cabal2nix + haskellPackages.cabal-install + haskellPackages.hoogle + haskellPackages.hlint + ]; +in +pkgs.stdenv.mkDerivation { + name = "aoc"; + buildInputs = externalPackages ++ [ hls ]; +} -- cgit v1.2.3