diff options
Diffstat (limited to 'nixpkgs/pkgs/development/compilers/nim/nixbuild.patch')
-rw-r--r-- | nixpkgs/pkgs/development/compilers/nim/nixbuild.patch | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/development/compilers/nim/nixbuild.patch b/nixpkgs/pkgs/development/compilers/nim/nixbuild.patch new file mode 100644 index 00000000000..bdfd04744e1 --- /dev/null +++ b/nixpkgs/pkgs/development/compilers/nim/nixbuild.patch @@ -0,0 +1,51 @@ +commit 164ba50fc74b980f77047080b2ae1ea099ae9b27 +Author: Emery Hemingway <ehmry@posteo.net> +Date: Mon Sep 7 14:09:22 2020 +0200 + + Load libaries by absolute path on NixOS + + If "nixbuild" is defined then choose dynamic runtime libraries by + searching $NIX_LDFLAGS at compile-time. + + Fix #15194 + +diff --git a/lib/pure/dynlib.nim b/lib/pure/dynlib.nim +index f31ae94dd..debed9c07 100644 +--- a/lib/pure/dynlib.nim ++++ b/lib/pure/dynlib.nim +@@ -56,6 +56,9 @@ + + import strutils + ++when defined(nixbuild): ++ import os ++ + type + LibHandle* = pointer ## a handle to a dynamically loaded library + +@@ -95,6 +98,25 @@ proc libCandidates*(s: string, dest: var seq[string]) = + libCandidates(prefix & middle & suffix, dest) + else: + add(dest, s) ++ when defined(nixbuild): ++ # Nix doesn't have a global library directory so ++ # load libraries using an absolute path if one ++ # can be derived from NIX_LDFLAGS. ++ # ++ # During Nix/NixOS packaging the line "define:nixbuild" ++ # should be appended to the ../../config/nim.cfg file ++ # to enable this behavior by default. ++ # ++ var libDirs = split(getEnv("LD_LIBRARY_PATH"), ':') ++ for flag in split(getEnv("NIX_LDFLAGS")): ++ if flag.startsWith("-L"): ++ libDirs.add(flag[2..flag.high]) ++ for lib in dest: ++ for dir in libDirs: ++ let abs = dir / lib ++ if existsFile(abs): ++ dest = @[abs] ++ return + + proc loadLibPattern*(pattern: string, globalSymbols = false): LibHandle = + ## loads a library with name matching `pattern`, similar to what `dlimport` |