Nix mkDerivation 无法将本地文件系统 zip 文件识别为 src

Question

根据https://nixos.org/nixpkgs/manual/#ssec-unpack-phase我可以使用 zip 文件作为“源”。

with import <nixpkgs> {};

stdenv.mkDerivation {
  name = "test-environment";
  nativeBuildInputs = [ unzip ];
  buildInputs = [ unzip ];
  src = "./x.zip";
}

nix-build
these derivations will be built:
  /nix/store/431i1riasgh2hjs5rd9azfh0ssjlg7qj-test-environment.drv
building '/nix/store/431i1riasgh2hjs5rd9azfh0ssjlg7qj-test-environment.drv'...
unpacking sources
unpacking source archive ./x.zip
unzip:  cannot find or open ./x.zip, ./x.zip.zip or ./x.zip.ZIP.
unzip:  cannot find or open ./x.zip, ./x.zip.zip or ./x.zip.ZIP.
do not know how to unpack source archive ./x.zip
builder for '/nix/store/431i1riasgh2hjs5rd9azfh0ssjlg7qj-test-environment.drv' failed with exit code 1
error: build of '/nix/store/431i1riasgh2hjs5rd9azfh0ssjlg7qj-test-environment.drv' failed

x.zip我的工作目录中有一个文件。为什么会失败？

---

更新：

如果我设置，unpackCmd = "ls -altr";我会看到以下输出：

total 16
drwxr-x--- 9 nobody nixbld 4096 May 26 12:39 ..
drwx------ 2 nixbld nixbld 4096 May 26 12:39 .
-rw-r--r-- 1 nixbld nixbld 5806 May 26 12:39 env-vars

为什么我的 zip 文件没有出现在该上下文中？

Answer 1

您不希望 Nix 派生引用本地文件系统元素！如果任何内容尚未经过哈希处理并放入商店，则您的构建是不纯净的，并且无法在沙盒模式下工作。

将其更改为src = ./x.zip，文件将被散列并添加到存储中，并将src被设置为/nix/store/.....-x.zip路径。

with import <nixpkgs> {};

stdenv.mkDerivation {
  name = "test-environment";
  nativeBuildInputs = [ unzip ];
  buildInputs = [ unzip ];
  src = ./x.zip;  ## NO QUOTES!
}