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Merge "builtins.nixVersion: return fixed fake version" into main

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jade 2024-03-17 12:13:21 -06:00 committed by Gerrit Code Review
commit 706cee5c49
2 changed files with 7 additions and 16 deletions
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21
src/libexpr/primops.cc
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@ -4299,25 +4299,16 @@ void EvalState::createBaseEnv()
.impureOnly = true, .impureOnly = true,
}); });
v.mkString(nixVersion); v.mkString("2.18.3-lix");
addConstant("__nixVersion", v, { addConstant("__nixVersion", v, {
.type = nString, .type = nString,
.doc = R"( .doc = R"(
The version of Nix. Legacy version of Nix. Always returns "2.18.3-lix" on Lix.
For example, where the command line returns the current Nix version, To determine if features exist, Nix scripts should instead use direct
means of feature detection, such as checking for existence of
```shell-session builtins they want to use. Doing so allows for much better compatibility
$ nix --version across implementations.
nix (Nix) 2.16.0
```
the Nix language evaluator returns the same value:
```nix-repl
nix-repl> builtins.nixVersion
"2.16.0"
```
)", )",
}); });

2
tests/unit/libexpr/primops.cc
View file

@ -611,7 +611,7 @@ namespace nix {
TEST_F(PrimOpTest, nixVersion) { TEST_F(PrimOpTest, nixVersion) {
auto v = eval("builtins.nixVersion"); auto v = eval("builtins.nixVersion");
ASSERT_THAT(v, IsStringEq(nixVersion)); ASSERT_THAT(v, IsStringEq("2.18.3-lix"));
} }
TEST_F(PrimOpTest, currentSystem) { TEST_F(PrimOpTest, currentSystem) {