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-rw-r--r--src/nix-channel/meson.build1
-rw-r--r--src/nix-channel/nix-channel.cc267
-rw-r--r--src/nix-channel/unpack-channel.nix16
3 files changed, 0 insertions, 284 deletions
diff --git a/src/nix-channel/meson.build b/src/nix-channel/meson.build
deleted file mode 100644
index 97b92d789..000000000
--- a/src/nix-channel/meson.build
+++ /dev/null
@@ -1 +0,0 @@
-fs.copyfile('unpack-channel.nix')
diff --git a/src/nix-channel/nix-channel.cc b/src/nix-channel/nix-channel.cc
deleted file mode 100644
index 971337b63..000000000
--- a/src/nix-channel/nix-channel.cc
+++ /dev/null
@@ -1,267 +0,0 @@
-#include "profiles.hh"
-#include "shared.hh"
-#include "globals.hh"
-#include "filetransfer.hh"
-#include "store-api.hh"
-#include "legacy.hh"
-#include "fetchers.hh"
-#include "eval-settings.hh" // for defexpr
-#include "users.hh"
-
-#include <fcntl.h>
-#include <regex>
-#include <pwd.h>
-
-using namespace nix;
-
-typedef std::map<std::string, std::string> Channels;
-
-static Channels channels;
-static Path channelsList;
-
-// Reads the list of channels.
-static void readChannels()
-{
- if (!pathExists(channelsList)) return;
- auto channelsFile = readFile(channelsList);
-
- for (const auto & line : tokenizeString<std::vector<std::string>>(channelsFile, "\n")) {
- chomp(line);
- if (std::regex_search(line, std::regex("^\\s*\\#")))
- continue;
- auto split = tokenizeString<std::vector<std::string>>(line, " ");
- auto url = std::regex_replace(split[0], std::regex("/*$"), "");
- auto name = split.size() > 1 ? split[1] : std::string(baseNameOf(url));
- channels[name] = url;
- }
-}
-
-// Writes the list of channels.
-static void writeChannels()
-{
- auto channelsFD = AutoCloseFD{open(channelsList.c_str(), O_WRONLY | O_CLOEXEC | O_CREAT | O_TRUNC, 0644)};
- if (!channelsFD)
- throw SysError("opening '%1%' for writing", channelsList);
- for (const auto & channel : channels)
- writeFull(channelsFD.get(), channel.second + " " + channel.first + "\n");
-}
-
-// Adds a channel.
-static void addChannel(const std::string & url, const std::string & name)
-{
- if (!regex_search(url, std::regex("^(file|http|https)://")))
- throw Error("invalid channel URL '%1%'", url);
- if (!regex_search(name, std::regex("^[a-zA-Z0-9_][a-zA-Z0-9_\\.-]*$")))
- throw Error("invalid channel identifier '%1%'", name);
- readChannels();
- channels[name] = url;
- writeChannels();
-}
-
-static Path profile;
-
-// Remove a channel.
-static void removeChannel(const std::string & name)
-{
- readChannels();
- channels.erase(name);
- writeChannels();
-
- runProgram(settings.nixBinDir + "/nix-env", true, { "--profile", profile, "--uninstall", name });
-}
-
-static Path nixDefExpr;
-
-// Fetch Nix expressions and binary cache URLs from the subscribed channels.
-static void update(const StringSet & channelNames)
-{
- readChannels();
-
- auto store = openStore();
-
- auto [fd, unpackChannelPath] = createTempFile();
- writeFull(fd.get(),
- #include "unpack-channel.nix.gen.hh"
- );
- fd.reset();
- AutoDelete del(unpackChannelPath, false);
-
- // Download each channel.
- Strings exprs;
- for (const auto & channel : channels) {
- auto name = channel.first;
- auto url = channel.second;
-
- // If the URL contains a version number, append it to the name
- // attribute (so that "nix-env -q" on the channels profile
- // shows something useful).
- auto cname = name;
- std::smatch match;
- auto urlBase = std::string(baseNameOf(url));
- if (std::regex_search(urlBase, match, std::regex("(-\\d.*)$")))
- cname = cname + match.str(1);
-
- std::string extraAttrs;
-
- if (!(channelNames.empty() || channelNames.count(name))) {
- // no need to update this channel, reuse the existing store path
- Path symlink = profile + "/" + name;
- Path storepath = dirOf(readLink(symlink));
- exprs.push_back("f: rec { name = \"" + cname + "\"; type = \"derivation\"; outputs = [\"out\"]; system = \"builtin\"; outPath = builtins.storePath \"" + storepath + "\"; out = { inherit outPath; };}");
- } else {
- // We want to download the url to a file to see if it's a tarball while also checking if we
- // got redirected in the process, so that we can grab the various parts of a nix channel
- // definition from a consistent location if the redirect changes mid-download.
- auto result = fetchers::downloadFile(store, url, std::string(baseNameOf(url)), false);
- auto filename = store->toRealPath(result.storePath);
- url = result.effectiveUrl;
-
- bool unpacked = false;
- if (std::regex_search(filename, std::regex("\\.tar\\.(gz|bz2|xz)$"))) {
- runProgram(settings.nixBinDir + "/nix-build", false, { "--no-out-link", "--expr", "import " + unpackChannelPath +
- "{ name = \"" + cname + "\"; channelName = \"" + name + "\"; src = builtins.storePath \"" + filename + "\"; }" });
- unpacked = true;
- }
-
- if (!unpacked) {
- // Download the channel tarball.
- try {
- filename = store->toRealPath(fetchers::downloadFile(store, url + "/nixexprs.tar.xz", "nixexprs.tar.xz", false).storePath);
- } catch (FileTransferError & e) {
- filename = store->toRealPath(fetchers::downloadFile(store, url + "/nixexprs.tar.bz2", "nixexprs.tar.bz2", false).storePath);
- }
- }
- // Regardless of where it came from, add the expression representing this channel to accumulated expression
- exprs.push_back("f: f { name = \"" + cname + "\"; channelName = \"" + name + "\"; src = builtins.storePath \"" + filename + "\"; " + extraAttrs + " }");
- }
- }
-
- // Unpack the channel tarballs into the Nix store and install them
- // into the channels profile.
- std::cerr << "unpacking " << exprs.size() << " channels...\n";
- Strings envArgs{ "--profile", profile, "--file", unpackChannelPath, "--install", "--remove-all", "--from-expression" };
- for (auto & expr : exprs)
- envArgs.push_back(std::move(expr));
- envArgs.push_back("--quiet");
- runProgram(settings.nixBinDir + "/nix-env", false, envArgs);
-
- // Make the channels appear in nix-env.
- struct stat st;
- if (lstat(nixDefExpr.c_str(), &st) == 0) {
- if (S_ISLNK(st.st_mode))
- // old-skool ~/.nix-defexpr
- if (unlink(nixDefExpr.c_str()) == -1)
- throw SysError("unlinking %1%", nixDefExpr);
- } else if (errno != ENOENT) {
- throw SysError("getting status of %1%", nixDefExpr);
- }
- createDirs(nixDefExpr);
- auto channelLink = nixDefExpr + "/channels";
- replaceSymlink(profile, channelLink);
-}
-
-static int main_nix_channel(int argc, char ** argv)
-{
- {
- // Figure out the name of the `.nix-channels' file to use
- auto home = getHome();
- channelsList = settings.useXDGBaseDirectories ? createNixStateDir() + "/channels" : home + "/.nix-channels";
- nixDefExpr = getNixDefExpr();
-
- // Figure out the name of the channels profile.
- profile = profilesDir() + "/channels";
- createDirs(dirOf(profile));
-
- enum {
- cNone,
- cAdd,
- cRemove,
- cList,
- cUpdate,
- cListGenerations,
- cRollback
- } cmd = cNone;
- std::vector<std::string> args;
- parseCmdLine(argc, argv, [&](Strings::iterator & arg, const Strings::iterator & end) {
- if (*arg == "--help") {
- showManPage("nix-channel");
- } else if (*arg == "--version") {
- printVersion("nix-channel");
- } else if (*arg == "--add") {
- cmd = cAdd;
- } else if (*arg == "--remove") {
- cmd = cRemove;
- } else if (*arg == "--list") {
- cmd = cList;
- } else if (*arg == "--update") {
- cmd = cUpdate;
- } else if (*arg == "--list-generations") {
- cmd = cListGenerations;
- } else if (*arg == "--rollback") {
- cmd = cRollback;
- } else {
- if ((*arg).starts_with("-"))
- throw UsageError("unsupported argument '%s'", *arg);
- args.push_back(std::move(*arg));
- }
- return true;
- });
-
- switch (cmd) {
- case cNone:
- throw UsageError("no command specified");
- case cAdd:
- if (args.size() < 1 || args.size() > 2)
- throw UsageError("'--add' requires one or two arguments");
- {
- auto url = args[0];
- std::string name;
- if (args.size() == 2) {
- name = args[1];
- } else {
- name = baseNameOf(url);
- name = std::regex_replace(name, std::regex("-unstable$"), "");
- name = std::regex_replace(name, std::regex("-stable$"), "");
- }
- addChannel(url, name);
- }
- break;
- case cRemove:
- if (args.size() != 1)
- throw UsageError("'--remove' requires one argument");
- removeChannel(args[0]);
- break;
- case cList:
- if (!args.empty())
- throw UsageError("'--list' expects no arguments");
- readChannels();
- for (const auto & channel : channels)
- std::cout << channel.first << ' ' << channel.second << '\n';
- break;
- case cUpdate:
- update(StringSet(args.begin(), args.end()));
- break;
- case cListGenerations:
- if (!args.empty())
- throw UsageError("'--list-generations' expects no arguments");
- std::cout << runProgram(settings.nixBinDir + "/nix-env", false, {"--profile", profile, "--list-generations"}) << std::flush;
- break;
- case cRollback:
- if (args.size() > 1)
- throw UsageError("'--rollback' has at most one argument");
- Strings envArgs{"--profile", profile};
- if (args.size() == 1) {
- envArgs.push_back("--switch-generation");
- envArgs.push_back(args[0]);
- } else {
- envArgs.push_back("--rollback");
- }
- runProgram(settings.nixBinDir + "/nix-env", false, envArgs);
- break;
- }
-
- return 0;
- }
-}
-
-static RegisterLegacyCommand r_nix_channel("nix-channel", main_nix_channel);
diff --git a/src/nix-channel/unpack-channel.nix b/src/nix-channel/unpack-channel.nix
deleted file mode 100644
index 84e324a4d..000000000
--- a/src/nix-channel/unpack-channel.nix
+++ /dev/null
@@ -1,16 +0,0 @@
-{
- name,
- channelName,
- src,
-}:
-
-derivation {
- builder = "builtin:unpack-channel";
-
- system = "builtin";
-
- inherit name channelName src;
-
- # No point in doing this remotely.
- preferLocalBuild = true;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 01:26:35 +0000