From 2bd57d4d36f66de00fa4f791569056e58598e782 Mon Sep 17 00:00:00 2001
From: Qyriad <qyriad@qyriad.me>
Date: Sat, 27 Apr 2024 13:24:39 -0600
Subject: refactor some nix-env and profile code to libcmd

Notably, ProfileManifest and ProfileElement are useful generic
profile management code, and nix profile is not the only place in the
codebase where profiles are relevant.

This commit is in preparation for fixing upgrade-nix's interaction with
new-style profiles.

Change-Id: Iefc8bbd34b4bc6012175cb3d6e6a8207973bc792
---
 src/libcmd/cmd-profiles.hh | 73 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 73 insertions(+)
 create mode 100644 src/libcmd/cmd-profiles.hh

(limited to 'src/libcmd/cmd-profiles.hh')

diff --git a/src/libcmd/cmd-profiles.hh b/src/libcmd/cmd-profiles.hh
new file mode 100644
index 000000000..d03f9b1c2
--- /dev/null
+++ b/src/libcmd/cmd-profiles.hh
@@ -0,0 +1,73 @@
+#pragma once
+///@file
+
+#include "built-path.hh"
+#include "eval.hh"
+#include "flake/flakeref.hh"
+#include "get-drvs.hh"
+#include "types.hh"
+
+#include <string>
+#include <set>
+
+#include <nlohmann/json.hpp>
+
+namespace nix
+{
+
+struct ProfileElementSource
+{
+    FlakeRef originalRef;
+    // FIXME: record original attrpath.
+    FlakeRef lockedRef;
+    std::string attrPath;
+    ExtendedOutputsSpec outputs;
+
+    bool operator<(const ProfileElementSource & other) const;
+
+    std::string to_string() const;
+};
+
+constexpr int DEFAULT_PRIORITY = 5;
+
+struct ProfileElement
+{
+    StorePathSet storePaths;
+    std::optional<ProfileElementSource> source;
+    bool active = true;
+    int priority = DEFAULT_PRIORITY;
+
+    std::string identifier() const;
+
+    /**
+     * Return a string representing an installable corresponding to the current
+     * element, either a flakeref or a plain store path
+     */
+    std::set<std::string> toInstallables(Store & store);
+
+    std::string versions() const;
+
+    bool operator<(const ProfileElement & other) const;
+
+    void updateStorePaths(ref<Store> evalStore, ref<Store> store, const BuiltPaths & builtPaths);
+};
+
+struct ProfileManifest
+{
+    std::vector<ProfileElement> elements;
+
+    ProfileManifest() { }
+
+    ProfileManifest(EvalState & state, const Path & profile);
+
+    nlohmann::json toJSON(Store & store) const;
+
+    StorePath build(ref<Store> store);
+
+    static void printDiff(const ProfileManifest & prev, const ProfileManifest & cur, std::string_view indent);
+};
+
+DrvInfos queryInstalled(EvalState & state, const Path & userEnv);
+std::string showVersions(const std::set<std::string> & versions);
+
+}
-- 
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