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-rw-r--r--nix/sources.nix66
1 files changed, 46 insertions, 20 deletions
diff --git a/nix/sources.nix b/nix/sources.nix
index b64b8f8..1938409 100644
--- a/nix/sources.nix
+++ b/nix/sources.nix
@@ -6,25 +6,33 @@ let
# The fetchers. fetch_<type> fetches specs of type <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_file = pkgs: name: spec:
+ let
+ name' = sanitizeName name + "-src";
+ in
+ if spec.builtin or true then
+ builtins_fetchurl { inherit (spec) url sha256; name = name'; }
+ else
+ pkgs.fetchurl { inherit (spec) url sha256; name = name'; };
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) "${name}-src";
+ name' = sanitizeName name + "-src";
in
if spec.builtin or true then
builtins_fetchTarball { name = name'; inherit (spec) url sha256; }
else
pkgs.fetchzip { name = name'; inherit (spec) url sha256; };
- fetch_git = spec:
- builtins.fetchGit { url = spec.repo; inherit (spec) rev ref; };
+ fetch_git = name: spec:
+ let
+ ref =
+ if spec ? ref then spec.ref else
+ if spec ? branch then "refs/heads/${spec.branch}" else
+ if spec ? tag then "refs/tags/${spec.tag}" else
+ abort "In git source '${name}': Please specify `ref`, `tag` or `branch`!";
+ in
+ builtins.fetchGit { url = spec.repo; inherit (spec) rev; inherit ref; };
fetch_local = spec: spec.path;
@@ -40,11 +48,21 @@ let
# Various helpers
#
+ # https://github.com/NixOS/nixpkgs/pull/83241/files#diff-c6f540a4f3bfa4b0e8b6bafd4cd54e8bR695
+ sanitizeName = name:
+ (
+ concatMapStrings (s: if builtins.isList s then "-" else s)
+ (
+ builtins.split "[^[:alnum:]+._?=-]+"
+ ((x: builtins.elemAt (builtins.match "\\.*(.*)" x) 0) name)
+ )
+ );
+
# The set of packages used when specs are fetched using non-builtins.
- mkPkgs = sources:
+ mkPkgs = sources: system:
let
sourcesNixpkgs =
- import (builtins_fetchTarball { inherit (sources.nixpkgs) url sha256; }) {};
+ import (builtins_fetchTarball { inherit (sources.nixpkgs) url sha256; }) { inherit system; };
hasNixpkgsPath = builtins.any (x: x.prefix == "nixpkgs") builtins.nixPath;
hasThisAsNixpkgsPath = <nixpkgs> == ./.;
in
@@ -64,9 +82,9 @@ let
if ! builtins.hasAttr "type" spec then
abort "ERROR: niv spec ${name} does not have a 'type' attribute"
- else if spec.type == "file" then fetch_file pkgs spec
+ else if spec.type == "file" then fetch_file pkgs name spec
else if spec.type == "tarball" then fetch_tarball pkgs name spec
- else if spec.type == "git" then fetch_git spec
+ else if spec.type == "git" then fetch_git name spec
else if spec.type == "local" then fetch_local spec
else if spec.type == "builtin-tarball" then fetch_builtin-tarball name
else if spec.type == "builtin-url" then fetch_builtin-url name
@@ -80,7 +98,10 @@ let
saneName = stringAsChars (c: if isNull (builtins.match "[a-zA-Z0-9]" c) then "_" else c) name;
ersatz = builtins.getEnv "NIV_OVERRIDE_${saneName}";
in
- if ersatz == "" then drv else ersatz;
+ if ersatz == "" then drv else
+ # this turns the string into an actual Nix path (for both absolute and
+ # relative paths)
+ if builtins.substring 0 1 ersatz == "/" then /. + ersatz else /. + builtins.getEnv "PWD" + "/${ersatz}";
# Ports of functions for older nix versions
@@ -98,25 +119,29 @@ let
# https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/strings.nix#L269
stringAsChars = f: s: concatStrings (map f (stringToCharacters s));
+ concatMapStrings = f: list: concatStrings (map f list);
concatStrings = builtins.concatStringsSep "";
+ # https://github.com/NixOS/nixpkgs/blob/8a9f58a375c401b96da862d969f66429def1d118/lib/attrsets.nix#L331
+ optionalAttrs = cond: as: if cond then as else {};
+
# fetchTarball version that is compatible between all the versions of Nix
- builtins_fetchTarball = { url, name, sha256 }@attrs:
+ builtins_fetchTarball = { url, name ? null, sha256 }@attrs:
let
inherit (builtins) lessThan nixVersion fetchTarball;
in
if lessThan nixVersion "1.12" then
- fetchTarball { inherit name url; }
+ fetchTarball ({ inherit url; } // (optionalAttrs (!isNull name) { inherit name; }))
else
fetchTarball attrs;
# fetchurl version that is compatible between all the versions of Nix
- builtins_fetchurl = { url, sha256 }@attrs:
+ builtins_fetchurl = { url, name ? null, sha256 }@attrs:
let
inherit (builtins) lessThan nixVersion fetchurl;
in
if lessThan nixVersion "1.12" then
- fetchurl { inherit url; }
+ fetchurl ({ inherit url; } // (optionalAttrs (!isNull name) { inherit name; }))
else
fetchurl attrs;
@@ -135,7 +160,8 @@ let
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
+ , system ? builtins.currentSystem
+ , pkgs ? mkPkgs sources system
}: rec {
# The sources, i.e. the attribute set of spec name to spec
inherit sources;