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Add 'shell.nix' for local development
As part of this I created a new files `./nixpkgs` that obtains a specific version of the nixpkgs repo. This code was previously spread between `release.nix` and `fetchNixpkgs.nix`. I also removed the Nix 1.11 code to simplify things. If we need Nix 1.11 support we can add it again.
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{ rev # The Git revision of nixpkgs to fetch
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, sha256 # The SHA256 of the downloaded data
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, outputSha256 ? null # The SHA256 fixed-output hash
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, system ? builtins.currentSystem # This is overridable if necessary
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}:
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if (0 <= builtins.compareVersions builtins.nixVersion "1.12")
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# In Nix 1.12, we can just give a `sha256` to `builtins.fetchTarball`.
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then (
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builtins.fetchTarball {
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url = "https://github.com/NixOS/nixpkgs/archive/${rev}.tar.gz";
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sha256 = outputSha256;
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})
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# This hack should at least work for Nix 1.11
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else (
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(rec {
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tarball = import <nix/fetchurl.nix> {
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url = "https://github.com/NixOS/nixpkgs/archive/${rev}.tar.gz";
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inherit sha256;
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};
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builtin-paths = import <nix/config.nix>;
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script = builtins.toFile "nixpkgs-unpacker" ''
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"$coreutils/mkdir" "$out"
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cd "$out"
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"$gzip" --decompress < "$tarball" | "$tar" -x --strip-components=1
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'';
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nixpkgs = builtins.derivation ({
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name = "nixpkgs-${builtins.substring 0 6 rev}";
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builder = builtins.storePath builtin-paths.shell;
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args = [ script ];
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inherit tarball system;
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tar = builtins.storePath builtin-paths.tar;
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gzip = builtins.storePath builtin-paths.gzip;
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coreutils = builtins.storePath builtin-paths.coreutils;
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} // (if null == outputSha256 then { } else {
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outputHashMode = "recursive";
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outputHashAlgo = "sha256";
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outputHash = outputSha256;
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}));
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}).nixpkgs)
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10
nixpkgs.nix
Normal file
10
nixpkgs.nix
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let
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rev = "c5f9cd4cde81bcef2c8882d359d9d30313bebeb3";
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outputSha256 = "1nilhz6rhfg3ckp8yfmgy6v3q6spbyxfg0yn8rc2ydyn7119h4fn";
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nixpkgs = builtins.fetchTarball {
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url = "https://github.com/NixOS/nixpkgs/archive/${rev}.tar.gz";
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sha256 = outputSha256;
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};
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in
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import nixpkgs {}
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13
release.nix
13
release.nix
@ -1,15 +1,5 @@
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let
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fetchNixpkgs = import ./fetchNixpkgs.nix;
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nixpkgs = fetchNixpkgs {
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rev = "c5f9cd4cde81bcef2c8882d359d9d30313bebeb3";
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sha256 = "12w6g50hgk5nmijgs3rv7kq5mdybnkyv3cr2zm0q3ka9ax180dk6";
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outputSha256 = "1nilhz6rhfg3ckp8yfmgy6v3q6spbyxfg0yn8rc2ydyn7119h4fn";
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};
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pkgs = import nixpkgs {};
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pkgs = import ./nixpkgs.nix;
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dhall-kubernetes-smoketests =
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pkgs.runCommand
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@ -42,4 +32,3 @@ in
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];
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};
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}
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