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Refactor mkFlag / shouldUsePkg into the nixpkgs libraries

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This commit is contained in:
William A. Kennington III
2015-05-22 13:26:55 -07:00
parent 50fa9d8eea
commit 25a148fa19
18 changed files with 104 additions and 176 deletions
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pkgs/development/libraries/libssh2/default.nix
+1 -9
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@@ -7,16 +7,8 @@
, openssl ? null, libgcrypt ? null
}:
with stdenv;
let
mkFlag = trueStr: falseStr: cond: name: val:
if cond == null then null else
"--${if cond != false then trueStr else falseStr}${name}${if val != null && cond != false then "=${val}" else ""}";
mkEnable = mkFlag "enable-" "disable-";
mkWith = mkFlag "with-" "without-";
mkOther = mkFlag "" "" true;
shouldUsePkg = pkg: if pkg != null && stdenv.lib.any (x: x == stdenv.system) pkg.meta.platforms then pkg else null;
# Prefer openssl
cryptoStr = if shouldUsePkg openssl != null then "openssl"
else if shouldUsePkg libgcrypt != null then "libgcrypt"