chore: rebrand Nix to Lix when it makes sense

Here's my guide so far:

$ rg '((?!(recursive).*) Nix
(?!(daemon|store|expression|Rocks!|Packages|language|derivation|archive|account|user|sandbox|flake).*))'
-g '!doc/' --pcre2

All items from this query have been tackled. For the documentation side:
that's for https://git.lix.systems/lix-project/lix/issues/162.

Additionally, all remaining references to github.com/NixOS/nix which
were not relevant were also replaced.

Fixes: https://git.lix.systems/lix-project/lix/issues/148.
Fixes: https://git.lix.systems/lix-project/lix/issues/162.
Change-Id: Ib3451fae5cb8ab8cd9ac9e4e4551284ee6794545
Signed-off-by: Raito Bezarius <raito@lix.systems>

tests/functional/binary-cache.sh

@@ -70,7 +70,7 @@ export _NIX_FORCE_HTTP=1
 basicDownloadTests
 
 
-# Test whether Nix notices if the NAR doesn't match the hash in the NAR info.
+# Test whether Lix notices if the NAR doesn't match the hash in the NAR info.
 clearStore
 
 nar=$(ls $cacheDir/nar/*.nar.xz | head -n1)

tests/functional/build-remote-trustless-should-fail-0.sh

@@ -18,7 +18,7 @@ nix-build build-hook.nix -A passthru.input2 \
   --store "$TEST_ROOT/local" \
   --option system-features bar
 
-# Now when we go to build that downstream derivation, Nix will try to
+# Now when we go to build that downstream derivation, Lix will try to
 # copy our already-build `input2` to the remote store. That store object
 # is input-addressed, so this will fail.
 

tests/functional/ca/derivation-json.sh

@@ -17,7 +17,7 @@ drvPath3=$(nix derivation add --dry-run < $TEST_HOME/foo.json)
 [[ ! -e "$drvPath3" ]]
 
 # But the JSON is rejected without the experimental feature
-expectStderr 1 nix derivation add < $TEST_HOME/foo.json --experimental-features nix-command | grepQuiet "experimental Nix feature 'ca-derivations' is disabled"
+expectStderr 1 nix derivation add < $TEST_HOME/foo.json --experimental-features nix-command | grepQuiet "experimental Lix feature 'ca-derivations' is disabled"
 
 # Without --dry-run it is actually written
 drvPath4=$(nix derivation add < $TEST_HOME/foo.json)

tests/functional/db-migration.sh

@@ -2,7 +2,7 @@
 
 source common.sh
 
-# Only run this if we have an older Nix available
+# Only run this if we have an older Lix available
 # XXX: This assumes that the `daemon` package is older than the `client` one
 if [[ -z "${NIX_DAEMON_PACKAGE-}" ]]; then
     skipTest "not using the Nix daemon"

tests/functional/fetchTree-file.sh

@@ -72,7 +72,7 @@ EOF
     # old 'tarball' fetcher should still have their type set to 'tarball'
     assert (nodes.tarball_default_unpack.locked.type == "tarball");
     # Unless explicitely specified, the 'unpack' parameter shouldn’t appear here
-    # because that would break older Nix versions
+    # because that would break older Nix implementation versions
     assert (!nodes.tarball_default_unpack.locked ? unpack);
     assert (nodes.tarball_default_unpack.locked.narHash == "$input_directory_hash");
 
@@ -94,7 +94,7 @@ EOF
     [[ -z "${NIX_DAEMON_PACKAGE-}" ]] && return 0
 
     # Ensure that a lockfile generated by the current Nix for tarball inputs
-    # can still be read by an older Nix
+    # can still be read by an older Nix implementation
 
     cat <<EOF > flake.nix
     {

tests/functional/impure-derivations.sh

@@ -17,7 +17,7 @@ drvPath2=$(nix derivation add < $TEST_HOME/impure-drv.json)
 [[ "$drvPath" = "$drvPath2" ]]
 
 # But only with the experimental feature!
-expectStderr 1 nix derivation add < $TEST_HOME/impure-drv.json --experimental-features nix-command | grepQuiet "experimental Nix feature 'impure-derivations' is disabled"
+expectStderr 1 nix derivation add < $TEST_HOME/impure-drv.json --experimental-features nix-command | grepQuiet "experimental Lix feature 'impure-derivations' is disabled"
 
 nix build --dry-run --json --file ./impure-derivations.nix impure.all
 json=$(nix build -L --no-link --json --file ./impure-derivations.nix impure.all)

tests/functional/lang/eval-okay-foldlStrict-lazy-initial-accumulator.nix

@@ -1,5 +1,5 @@
 # Checks that the nul value for the accumulator is not forced unconditionally.
-# Some languages provide a foldl' that is strict in this argument, but Nix does not.
+# Some languages provide a foldl' that is strict in this argument, but Nix language does not.
 builtins.foldl'
   (_: x: x)
   (throw "This is never forced")

tests/functional/lang/eval-okay-fromTOML.nix

@@ -89,7 +89,7 @@
     bool1 = true
     bool2 = false
 
-    # FIXME: not supported because Nix doesn't have a date/time type.
+    # FIXME: not supported because Nix language doesn't have a date/time type.
     #odt1 = 1979-05-27T07:32:00Z
     #odt2 = 1979-05-27T00:32:00-07:00
     #odt3 = 1979-05-27T00:32:00.999999-07:00

tests/functional/nested-sandboxing/command.sh

@@ -1,5 +1,5 @@
 export NIX_BIN_DIR=$(dirname $(type -p nix))
-# TODO Get Nix and its closure more flexibly
+# TODO Get Lix and its closure more flexibly
 export EXTRA_SANDBOX="/nix/store $(dirname $NIX_BIN_DIR)"
 
 badStoreUrl () {

tests/functional/repl_characterization/test-session.cc

@@ -173,7 +173,7 @@ void TestSession::runCommand(std::string command)
         std::cerr << "runCommand " << command << "\n";
     }
     command += "\n";
-    // We have to feed a newline into the output parser, since Nix might not
+    // We have to feed a newline into the output parser, since Lix might not
     // give us a newline before a prompt in all cases (it might clear line
     // first, e.g.)
     outputParser.feed('\n');